{"title":"Mills Nutrients","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eMills nutrients were created in Holland and have been used on all types of indoor gardens for years. They are formulated with the highest quality ingredients and potent blends, to produce amazing results.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eMills have achieved this by blending high-grade minerals with nourishing organic additives. The end result is a bio-mineral feed that's a customer favourite. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eMills have created their own formulas, which are designed to be used together. This means that you can combine their products and create a perfectly balanced feeding schedule for your plants!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eAt Growers House we only focus on the highest grade of hydroponic supplies for you to use in your indoor garden. We want you to grow your plants with confidence in your hydroponics system.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"mills-nutrient-full-coco-kits-1-8-plants","title":"Mills Nutrient Full Coco Kits (1-8 Plants)","description":"\u003csection class=\"gh-product-listing\"\u003e\n\n\u003ch2\u003eMills Nutrient Full Coco Kits (1-8 Plants) - Complete Coco Feeding in One Box\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Coco coir growers who want every stage of feeding covered by one matched nutrient range instead of piecing it together themselves.\u003c\/p\u003e\n\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003e\nMills has been making nutrients in the Netherlands for decades and their coco range is built as a proper system, not a base feed with a few bolt-ons. Buying the kit means you're not left short of something halfway through flower because you only bought the base nutrient. One we sell a lot of for growers who want the range sorted in one go.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eThe Mills Full Coco Kit bundles the full Mills feeding range sized for coco coir growing, built around Mills Basis A and Basis B as the core two-part base nutrient supplying macro and micronutrients through both veg and flower. Alongside the base, the kit adds Mills Start-R for root development and establishment, Mills C4 as a flowering-stage bloom additive, Mills PK for a late-flower phosphorus and potassium boost, Mills CalMag for the extra calcium and magnesium coco substrates need, and Mills Vitalize, a silicon additive that strengthens plant structure and supports nutrient uptake.\u003c\/p\u003e\n\n\u003cp\u003eThe kit comes in two sizes: a 1-4 Plants kit and a 4-8 Plants kit, scaled by bottle volume rather than formulation, so both give you the identical six-product Mills range, just sized for your plant count. Basis A and B are always mixed and added separately, never combined as concentrates, to avoid the two locking out nutrients before they reach the root zone.\u003c\/p\u003e\n\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eComplete coco kits from the major Dutch nutrient brands are all built around a similar two-part-base-plus-additives structure.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVersus Canna Coco A+B, which is a simpler two-bottle-plus-boosters range, Mills includes more dedicated additives (Start-R, C4, PK, Vitalize) as standard in the kit rather than as separate purchases.\u003c\/li\u003e\n\u003cli\u003eVersus House \u0026amp; Garden's coco range, Mills is generally the more budget-friendly complete kit while still covering root, base, bloom and late-flower stages.\u003c\/li\u003e\n\u003cli\u003eVersus Plagron's coco range, both are comparably complete, with Mills having a long track record specifically in coco substrates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou're paying for six matched products bought as one kit rather than assembling a feeding programme bottle by bottle.\u003c\/p\u003e\n\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eFollow the Mills feeding schedule for coco rather than mixing and matching doses from other brands.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMixing Basis A and B\u003c\/strong\u003e\u003cbr\u003eAdd Basis A to your water and mix thoroughly first, then add Basis B separately and mix again. Never combine the two concentrates before they're diluted.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEarly growth\u003c\/strong\u003e\u003cbr\u003eAdd Start-R alongside the base feed during propagation and early vegetative growth to support root establishment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlowering\u003c\/strong\u003e\u003cbr\u003eIntroduce C4 as plants move into flower, then add PK during the later flowering weeks for the bloom finish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCalMag and Vitalize\u003c\/strong\u003e\u003cbr\u003eRun CalMag throughout to cover coco's naturally lower calcium and magnesium availability, and add Vitalize for structural strength, particularly under strong lighting.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKit contents: \u003cstrong\u003eBasis A, Basis B, Start-R, C4, PK, CalMag, Vitalize\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKit sizes: \u003cstrong\u003e1-4 Plants, 4-8 Plants\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGrowing medium: \u003cstrong\u003eCoco coir\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBase type: \u003cstrong\u003eTwo-part (A and B), mixed separately\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdditives included: \u003cstrong\u003eRoot, bloom, late-flower and silicon supplements\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturer: \u003cstrong\u003eMills Nutrients, Netherlands\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCoco coir growers who want one matched range covering every stage of the grow\u003c\/li\u003e\n\u003cli\u003eGrowers who'd rather buy a complete kit once than keep topping up individual bottles\u003c\/li\u003e\n\u003cli\u003eAnyone switching to coco from soil or hydro who wants a proven, coco-specific programme\u003c\/li\u003e\n\u003cli\u003eGrowers running 1-8 plants who want the kit sized to their plant count\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBest for growers in coco specifically; Mills also sells dedicated soil and hydro ranges if that's your medium.\u003c\/p\u003e\n\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eSaves time and removes guesswork by giving you everything the crop needs from root to late flower in one purchase, with a brand that's been doing coco feeding for decades.\u003c\/p\u003e\n\u003cp\u003eDoes exactly what it should, day in, day out, and it's the kit we point new coco growers toward first.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"MILLS","offers":[{"title":"1-4 Plants","offer_id":47915797414058,"sku":"K-974957","price":134.99,"currency_code":"GBP","in_stock":true},{"title":"4-8 Plants","offer_id":47915797446826,"sku":"K-974958","price":264.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/MILLS_FULL_COCO_NUTRIENT_KIT_1-4_PLANTS_064fd91a-91fd-46b7-a0ad-440de86caa2c.jpg?v=1769181156"},{"product_id":"mills-nutrients-vitalize","title":"Mills Nutrients - Vitalize","description":"\u003csection class=\"gh-product-listing\"\u003e\n\u003ch2\u003eMills Nutrients Vitalize — Bioavailable Silica Additive for Plant Strength \u0026amp; Resilience\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Growers wanting to strengthen plant structure, boost yields, and improve disease resistance without complicating their feeding schedule\u003c\/p\u003e\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003eThis is properly clever stuff. Vitalize is a patented monosilicic acid that's 1000x more bioavailable than standard potassium silicate products — meaning your plants actually absorb it. You'll see visible results in 24-36 hours. It's concentrated, so you're using tiny dose rates. One we recommend a lot for growers serious about plant structure and yields.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eMills Vitalize is a \u003cstrong\u003eplant biostimulant and silica nutrient additive\u003c\/strong\u003e that strengthens cell walls from the inside out. Using patented monosilicic acid technology developed with Rexil Agro BV — the industry leaders in silicic acid agro technology — Vitalize hardens your plant's cellular structure, creating thicker stems, stronger branches, and healthier foliage that can support heavier yields. Unlike traditional potassium silicate products, Vitalize is highly concentrated and fast-acting. You're adding small amounts throughout your growing cycle, and the results show quickly. Thicker stems mean better light absorption, bigger plants, and a more resilient crop that handles stress, pests, and disease pressure far better than untreated plants.\u003c\/p\u003e\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eMills Vitalize is positioned in the \u003cstrong\u003epremium bioavailable silica category\u003c\/strong\u003e, competing with products like PowerSi but backed by exclusive patented technology.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOver 1000x more dissolvable than standard potassium silicate products\u003c\/li\u003e\n\u003cli\u003eResults visible within 24-36 hours, not weeks\u003c\/li\u003e\n\u003cli\u003ePatented liberation method — sold exclusively by Mills, not available elsewhere\u003c\/li\u003e\n\u003cli\u003eHighly concentrated formula means lower dose rates and better cost-per-application than cheaper alternatives\u003c\/li\u003e\n\u003cli\u003eWorks synergistically with beneficial microbes to enhance overall plant health\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn plain terms: you're paying for bioavailability and speed. Cheaper silica products work eventually. Vitalize works fast and your plants absorb more of it.\u003c\/p\u003e\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eVitalize is dosed small and added early in your mixing routine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVegetative stage\u003c\/strong\u003e\u003cbr\u003eUse 0.2 ml per litre of nutrient solution. Add Vitalize first, mix thoroughly, then add your base nutrients and other additives. Silicon hardens cell walls as the plant develops, so you need it from early growth onwards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEarly flowering (first 4 weeks)\u003c\/strong\u003e\u003cbr\u003eContinue at 0.2 ml per litre. This is when plant structure matters most — stronger stems support heavier yields.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLate flowering\u003c\/strong\u003e\u003cbr\u003eReduce to 0.1 ml per litre. Your plant's cellular structure is set by this stage; you're maintaining rather than building.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFoliar application\u003c\/strong\u003e\u003cbr\u003eVitalize can be sprayed directly onto leaves once weekly. No residue remains on foliage, and it provides an added protective layer on leaf and stem surfaces, improving resilience to pests and mildew. This is particularly useful in humid environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant\u003c\/strong\u003e\u003cbr\u003eAlways add Vitalize first and mix thoroughly before introducing other nutrients. This ensures even distribution and prevents interaction issues with your base feed.\u003c\/p\u003e\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eSilicon works by forming a silicon-cellulose structure in plant cell walls — essentially reinforcing them. Within 24 hours of application, your plants' cellular architecture becomes significantly more robust. This has several knock-on effects:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStructure:\u003c\/strong\u003e Thicker, stronger stems and branches that don't bend or snap under the weight of heavier yields\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight absorption:\u003c\/strong\u003e Bigger, healthier leaves absorb maximum light, translating to larger plants and increased productivity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNutrient uptake:\u003c\/strong\u003e Silicon improves root development and calcium absorption, strengthening the foundation of nutrient delivery across the entire plant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePest and disease resistance:\u003c\/strong\u003e Hardened cell walls make it harder for insects to penetrate and reduce susceptibility to powdery mildew and fungal infections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStress tolerance:\u003c\/strong\u003e Healthier, more resilient plants handle environmental stress — heat, drought, humidity swings — far better than untreated plants\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct type: \u003cstrong\u003ePlant biostimulant and silica nutrient additive\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eActive ingredient: \u003cstrong\u003eMonosilicic acid (bioavailable silicic acid)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eComposition: \u003cstrong\u003ePotassium silicate, boric acid, copper chloride, sodium molybdate, zinc chloride\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eNPK ratio: \u003cstrong\u003e0-0-0.8\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBioavailability: \u003cstrong\u003e1000x more dissolvable than standard potassium silicate\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDose rate (veg): \u003cstrong\u003e0.2 ml per litre\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDose rate (early flower): \u003cstrong\u003e0.2 ml per litre\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDose rate (late flower): \u003cstrong\u003e0.1 ml per litre\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eApplication method: \u003cstrong\u003eAdd to nutrient solution or foliar spray\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eResults onset: \u003cstrong\u003eVisible within 24-36 hours\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePackaging: \u003cstrong\u003eHeavy-duty polyethylene jerricans with collapsible handles and dual twist tops. Available in sizes from 1L hobby to 1000L commercial\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTechnology: \u003cstrong\u003ePatented method — exclusive to Mills Nutrients\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSynergy: \u003cstrong\u003eWorks synergistically with beneficial soil microbes to enhance plant health\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGrowers building stronger plants with better structural integrity\u003c\/li\u003e\n\u003cli\u003eAnyone running setups where yield weight and plant resilience matter\u003c\/li\u003e\n\u003cli\u003eHydroponic and soil growers concerned with disease and pest pressure\u003c\/li\u003e\n\u003cli\u003eExperienced growers optimising their nutrient schedule without overcomplicating it\u003c\/li\u003e\n\u003cli\u003eNew growers wanting a simple additive that delivers visible results quickly\u003c\/li\u003e\n\u003cli\u003eGrowers in humid or high-stress environments where plant health is compromised\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eParticularly well suited to anyone who's ever had a heavy-yielding plant collapse under its own weight or struggled with mildew in their growing space. This solves both problems.\u003c\/p\u003e\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eVitalize is the real deal. It's a patented, concentrated silica additive that actually gets absorbed by your plants within hours. You're using tiny amounts, your plants get visibly stronger, and yields improve as a result. The technology is exclusive to Mills, which is why it outperforms standard potassium silicate products.\u003c\/p\u003e\n\u003cp\u003eIf you're serious about plant structure and yields, this is worth picking up. Simple to use, proven results, and the maths stacks up — a small investment in plant resilience pays back in better yields. Good time to grab it while clearance stock lasts.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"MILLS","offers":[{"title":"500ml","offer_id":47916182405290,"sku":"762330","price":114.99,"currency_code":"GBP","in_stock":true},{"title":"1 Litre","offer_id":47916182438058,"sku":"762340","price":194.99,"currency_code":"GBP","in_stock":true},{"title":"5 Litre","offer_id":47916182470826,"sku":"762350","price":629.99,"currency_code":"GBP","in_stock":true},{"title":"100ml","offer_id":47916182503594,"sku":"762315","price":29.99,"currency_code":"GBP","in_stock":true},{"title":"250ml","offer_id":47916182536362,"sku":"762320","price":57.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/mills_vitalize.jpg?v=1769188872"},{"product_id":"mills-nutrients-c4","title":"Mills Nutrients - C4","description":"\u003csection class=\"gh-product-listing\"\u003e\n\u003ch2\u003eMills Nutrients C4 — Bloom Stimulator for Early-to-Mid Flowering\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Growers wanting a proper bloom booster that works from week 2 of flowering without breaking the budget\u003c\/p\u003e\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003eC4 is one of those bloom additives that actually delivers. Mills have built a reputation on doing the basics brilliantly, and this sits right in that sweet spot — a carbohydrate and bio-stimulant blend that triggers flower development without premium pricing. One we recommend a lot for growers moving into the flowering phase.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eMills C4 is a \u003cstrong\u003ebloom stimulator and carbohydrate additive\u003c\/strong\u003e designed to support your plants during the critical early-to-mid flowering stage. Unlike pure PK boosters that just hammer phosphorus and potassium, C4 works differently — it delivers a sophisticated blend of sugars, amino acids, humic acids, and bio-stimulants that trigger flower production, encourage denser blooms, and boost the plant's natural essential oil output. Use it from week 2 of flowering through to week 6, and you'll see quicker fruit set, heavier yields, and noticeably better quality.\u003c\/p\u003e\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eC4 sits in the \u003cstrong\u003ehybrid bloom booster\u003c\/strong\u003e category — neither a pure PK booster nor a late-stage hardener.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWorks alongside your base nutrients (Basis A \u0026amp; B) rather than replacing them — it alters the NPK ratio to favour flowering\u003c\/li\u003e\n\u003cli\u003eEarly-to-mid phase focus means you'll transition to a finisher like Mills Ultimate PK from week 6 onwards\u003c\/li\u003e\n\u003cli\u003eCarbohydrate-driven approach mimics how premium brands like Advanced Nutrients work, but at significantly better value\u003c\/li\u003e\n\u003cli\u003eOrganic-derived formula plays well with beneficial biologics and works across soil, coco, and hydro systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn short: you're getting professional-grade bloom stimulation at mid-tier pricing, not premium markup.\u003c\/p\u003e\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eC4 is highly concentrated, so a little goes a long way. Start low, work up, and watch how your plants respond.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStandard application\u003c\/strong\u003e\u003cbr\u003eUse from week 2 of flowering at \u003cstrong\u003e0.5 ml per litre of water\u003c\/strong\u003e, increasing gradually to \u003cstrong\u003e1.5 ml per litre\u003c\/strong\u003e as you move through the mid-flowering phase. Alternatively, dose at 4–8 ml per gallon from week 2 through week 6.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntegration with Mills base nutrients\u003c\/strong\u003e\u003cbr\u003eC4 is designed to work alongside Mills Basis A \u0026amp; B. When combined, it shifts the overall NPK balance to favour flowering and fruit production. If you're running Mills as your base, C4 becomes the bloom trigger; if you're on another brand, just run it as your standalone bloom additive during this window.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTransition to finishing phase\u003c\/strong\u003e\u003cbr\u003eRun C4 through week 6 of flowering, then switch to Mills Ultimate PK for the final weeks. This two-stage approach mirrors how the plant naturally shifts its priorities — early blooming, then hardening and ripening.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible across all systems\u003c\/strong\u003e\u003cbr\u003eWorks equally well in hand-watered soil, coco drip systems, deep water culture, or NFT — no special considerations needed.\u003c\/p\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct type: \u003cstrong\u003eLiquid bloom stimulator and carbohydrate additive\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eComposition: \u003cstrong\u003eMacro and micronutrients, bio-stimulants, complex sugars, amino acids, humic acids, and trace minerals\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFormat: \u003cstrong\u003eHeavy-duty polyethylene jerrican with collapsible handles and dual twist-top pour\/vent system\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAvailable sizes: \u003cstrong\u003e1L (hobby), 5L, 10L, 20L, 60L, 200L, and larger commercial volumes\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eConcentration: \u003cstrong\u003eHighly concentrated — only 0.5–1.5 ml per litre required\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eClassification: \u003cstrong\u003ePredominantly organic-sourced, zero biological activity\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eApplication window: \u003cstrong\u003eWeek 2 through week 6 of flowering\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatibility: \u003cstrong\u003eAll growing media and watering systems; designed to work with Mills Basis A \u0026amp; B\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGrowers entering the flowering phase for the first time who want straightforward, proven results\u003c\/li\u003e\n\u003cli\u003eExperienced growers building a complete Mills nutrient regimen for consistency and synergy\u003c\/li\u003e\n\u003cli\u003eAnyone running multiple plants or rooms where bloom booster costs add up — better value than premium alternatives\u003c\/li\u003e\n\u003cli\u003eGrowers running soil, coco, or hydro systems who need a universal bloom additive that plays well with biologics\u003c\/li\u003e\n\u003cli\u003eThose chasing denser, heavier blooms with richer aromatic profiles without guessing which product to use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eParticularly well suited to setups where \u003cstrong\u003eproven results and straightforward integration matter more than brand hype\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eC4 is a proper bloom stimulator at a price that makes sense. Mills have been doing this for years — started in Holland, now manufactured there too — and they've dialled in a formula that works. The bio-stimulants trigger the plant to produce more essential oils and sugars, the carbohydrates support flower development, and the whole thing plays nicely with everything else you're running.\u003c\/p\u003e\n\u003cp\u003eIf you're planning your flowering phase and want a bloom booster that delivers without the premium markup, worth picking up while stock lasts. Does exactly what it should, week after week.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"MILLS","offers":[{"title":"250mls","offer_id":47916341952682,"sku":"762230","price":20.99,"currency_code":"GBP","in_stock":true},{"title":"1 Litre","offer_id":47916341985450,"sku":"762240","price":49.99,"currency_code":"GBP","in_stock":true},{"title":"5 Litre","offer_id":47916342018218,"sku":"762250","price":169.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/mills_nutrients_c4_1_litre.jpg?v=1769191769"},{"product_id":"mills-nutrients-ultimate-pk","title":"Mills Nutrients - Ultimate PK","description":"\u003csection class=\"gh-product-listing\"\u003e\n\u003ch2\u003eMills Nutrients Ultimate PK — Phosphite-Based Bloom Booster for Final Weeks Flowering\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Growers pushing the finishing phase and wanting denser cell structure, richer flavour, and heavier yields in the last 2-4 weeks of bloom\u003c\/p\u003e\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003eMills Ultimate PK does one job exceptionally well — it hardens and finishes your crop when it matters most. Phosphite-based formula means better bioavailability than standard PK products, and it won't accumulate in your medium. Proper kit for the final sprint.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eMills Nutrients Ultimate PK is a \u003cstrong\u003ephosphite-based PK bloom booster\u003c\/strong\u003e designed specifically for the final 2-4 weeks of the flowering phase. It's a heavyweight finisher that works on top of your base feed to drive harder cell structure, richer aromatic compounds, and superior yield in the closing stages of growth. The phosphite formulation — a highly bioavailable form of phosphate — ensures your plants get exactly what they need when they need it most, without the nutrient lockup you'd risk with cheaper alternatives.\u003c\/p\u003e\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eUltimate PK sits in the \u003cstrong\u003efinishing booster bracket\u003c\/strong\u003e — designed for late-stage bloom, not early flowering acceleration.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePhosphite formula offers superior bioavailability vs standard phosphate-based PK boosters\u003c\/li\u003e\n\u003cli\u003eWon't accumulate in your medium — Mills bio-mineral philosophy keeps things clean\u003c\/li\u003e\n\u003cli\u003eNarrower application window (weeks 5-8) than broad-spectrum boosters, which means more targeted results\u003c\/li\u003e\n\u003cli\u003eMid-premium pricing with technical formulation to back it up\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn short: you're paying for precision, not just a generic PK bump. Works best alongside Mills' base range (Basis A+B, C4) but compatible with any nutrient line.\u003c\/p\u003e\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eUltimate PK is a supplement — it stacks on top of your regular base feed, not instead of it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLate-stage finishing (weeks 5-8 of flowering)\u003c\/strong\u003e\u003cbr\u003eIntroduce at 2 ml per litre in week 5, increasing to 2.5 ml per litre from week 7 onwards. Most growers see best results starting week 5 and running through to final flush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntegration with base nutrients\u003c\/strong\u003e\u003cbr\u003eWhen you introduce Ultimate PK, dial back your base feed slightly to prevent nutrient burn. Mills products work as a system, so if you're running Basis A+B, reduce those slightly and add Ultimate PK to the mix. The NPK ratio (0-7-6) means zero nitrogen — it's pure phosphorus and potassium, designed to complement, not replace.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWatering method compatibility\u003c\/strong\u003e\u003cbr\u003eWorks seamlessly across hand watering, drip systems, and run-to-waste setups. No special prep needed. Mix into your water reservoir as normal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRoot health bonus\u003c\/strong\u003e\u003cbr\u003ePhosphite also improves oxygen flow to roots and acts as a natural root cleaner, so you're getting secondary benefits beyond just the bloom finish.\u003c\/p\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNPK Ratio: \u003cstrong\u003e0-7-6\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eActive ingredient: \u003cstrong\u003ePhosphite (bioavailable phosphate)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eChelated micronutrients: \u003cstrong\u003eYes — optimised for plant absorption\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDosage: \u003cstrong\u003e2-2.5 ml per litre (weeks 5-8 of flowering)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAlternative imperial dosing: \u003cstrong\u003e8 ml per gallon (weeks 2-4 of bloom phase)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMedium compatibility: \u003cstrong\u003eAll growing mediums (coco, soil, clay pebbles, rockwool, etc.)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFormat: \u003cstrong\u003eLiquid concentrate\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eContainer: \u003cstrong\u003eHeavy-duty polyethylene jerrican with collapsible handles and dual twist tops\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAvailable sizes: \u003cstrong\u003e1L hobby to 1000L commercial\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAccumulation: \u003cstrong\u003eBio-mineral formula — no residual buildup in medium\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLate-bloom specialists who want to squeeze maximum density and flavour in the final push\u003c\/li\u003e\n\u003cli\u003eGrowers already running Mills base nutrients and looking to complete the system\u003c\/li\u003e\n\u003cli\u003eAnyone running hydro or coco who needs precise nutrient timing without guesswork\u003c\/li\u003e\n\u003cli\u003eSerious home growers and commercial setups where yield and quality matter equally\u003c\/li\u003e\n\u003cli\u003eGrowers who've had nutrient burn issues — Mills' reduction-compatible approach is safer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eParticularly well suited to growers who understand that \u003cstrong\u003ethe last 2-4 weeks make or break the entire crop\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eUltimate PK does what a good finishing booster should do — it hardens your foliage, drives richer aromatics, and pushes yield without overcomplicating your feed schedule. The phosphite formulation is the real win here; it's a level above generic PK products and growers notice the difference.\u003c\/p\u003e\n\u003cp\u003eWorth picking up if you're serious about the finishing phase. Apply it right, dial back your base feed, and let it work. Good time to buy while clearance stock lasts.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"MILLS","offers":[{"title":"1 Litre","offer_id":47916342280362,"sku":"762270","price":49.99,"currency_code":"GBP","in_stock":true},{"title":"5 Litre","offer_id":47916342313130,"sku":"762280","price":179.99,"currency_code":"GBP","in_stock":true},{"title":"250ml","offer_id":47916342345898,"sku":"762260","price":20.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/mills_nutrients_ultimate_pk_1_litre.jpg?v=1769191779"},{"product_id":"mills-nutrients-cal-mag-m27346","title":"Mills Nutrients - CalMag","description":"\u003csection class=\"gh-product-listing\"\u003e\n\n\u003ch2\u003eMills Nutrients - CalMag - Calcium and Magnesium for Soft Water and RO Growers\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Growers using reverse osmosis water or growing in soft-water areas whose feed EC needs a lift in calcium and magnesium.\u003c\/p\u003e\n\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003e\nIf you're on RO water or your tap water runs soft, CalMag isn't optional, it's the thing that stops the classic RO deficiency symptoms before they show up on the leaves. Mills' version does the job without fuss. Simple, reliable feeding that delivers results.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eMills CalMag is a concentrated calcium and magnesium supplement, containing 13.1% calcium, 2.5% magnesium and 8.3% nitrogen by weight. It's aimed specifically at growers whose water starts with a low EC, below around 0.3, which is typical of reverse osmosis-filtered water or naturally soft tap water. Both scenarios strip out the calcium and magnesium plants would normally get from the water itself, and a shortfall shows up as stunted new growth, curled leaf tips and weak stems.\u003c\/p\u003e\n\n\u003cp\u003eDose at roughly 1ml per litre to lift a low starting EC up to around 0.3-0.4 before adding your main base nutrient, or run it at 1ml per litre once a week on its own, at a pH of 6.5, as ongoing deficiency prevention alongside a full feeding programme.\u003c\/p\u003e\n\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eCalMag supplements are a standard line-up across every major nutrient brand, and the products are functionally similar.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVersus General Hydroponics CaliMagic, both target the same RO\/soft-water calcium-magnesium gap; Mills is formulated to sit alongside its own Basis A\/B and coco ranges specifically.\u003c\/li\u003e\n\u003cli\u003eVersus Botanicare CalMag, dosing and purpose are near-identical, so the choice often comes down to which base nutrient range you're already running.\u003c\/li\u003e\n\u003cli\u003eVersus skipping CalMag altogether on RO water, the difference shows up within a week or two as visible deficiency symptoms if you don't supplement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt's a straightforward top-up rather than a specialist product, worth having on the shelf if your water supply is soft or RO-filtered.\u003c\/p\u003e\n\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eDosage depends on why you're using it, correction or ongoing prevention.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRaising a low starting EC\u003c\/strong\u003e\u003cbr\u003eAdd around 1ml per litre to your reservoir before other nutrients, then check EC and add more in 0.5ml\/litre increments if you need it higher, up to about 0.4 EC from CalMag alone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeekly prevention\u003c\/strong\u003e\u003cbr\u003eIf you're already running a full feed but want to guard against deficiency, dose 1ml per litre on its own, once a week, at pH 6.5.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCoco growers\u003c\/strong\u003e\u003cbr\u003eCoco naturally locks up some calcium and magnesium, so CalMag is worth running as a standing addition to your base feed rather than just as an occasional top-up.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNitrogen (N): \u003cstrong\u003e8.3% w\/w\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCalcium (Ca): \u003cstrong\u003e13.1% w\/w\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMagnesium (Mg): \u003cstrong\u003e2.5% w\/w\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTypical dose: \u003cstrong\u003e1ml per litre\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTarget use case: \u003cstrong\u003eSoft water or RO-filtered water with starting EC below 0.3\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRecommended pH: \u003cstrong\u003e6.5 for standalone weekly dosing\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSizes available: \u003cstrong\u003e1 Litre, 5 Litre\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturer: \u003cstrong\u003eMills Nutrients, Netherlands\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGrowers using reverse osmosis or deionised water\u003c\/li\u003e\n\u003cli\u003eAnyone in a soft-water area with a naturally low tap water EC\u003c\/li\u003e\n\u003cli\u003eCoco coir growers who need a standing calcium\/magnesium top-up\u003c\/li\u003e\n\u003cli\u003eGrowers seeing early signs of Ca\/Mg deficiency, such as curled tips or stunted new growth\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot needed if your tap water already runs a healthy EC with decent mineral content, hard water areas usually don't need it.\u003c\/p\u003e\n\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eIt's a cheap insurance policy against one of the most common RO and soft-water feeding mistakes, and the dosing is simple enough that there's no excuse to skip it if you're on filtered water.\u003c\/p\u003e\n\u003cp\u003eWorks consistently without overcomplicating your feeding schedule. Does exactly what it should, day in, day out.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"MILLS","offers":[{"title":"1 Litre","offer_id":47916489277610,"sku":"762370","price":26.99,"currency_code":"GBP","in_stock":true},{"title":"5 Litre","offer_id":47916489310378,"sku":"762371","price":109.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/762370_-_1_litre_1_7b92de59-b73c-4bff-8623-5e42da606cd3.jpg?v=1769194356"},{"product_id":"mills-nutrients-ph-flower","title":"Mills Nutrients - pH Flower - 1 Litre","description":"\u003csection class=\"gh-product-listing\"\u003e\n\n\u003ch2\u003eMills Nutrients - pH Flower - 1 Litre - Lowers Reservoir pH for the Flowering Stage\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Growers who need to bring reservoir pH down into range during flowering without introducing a separate unmatched pH-down product.\u003c\/p\u003e\n\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003e\nEvery grower needs a pH-down at some point, tap water and nutrient concentrates almost always push pH up over time. Mills pH Flower does the one job it's meant for and nothing more. Simple, reliable feeding that delivers results.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eMills pH Flower is a phosphoric acid-based pH reducer, made up of roughly 59% phosphoric acid and 42.5% phosphorus oxide (P2O5), designed to bring reservoir pH down during the flowering stage. Add it to your nutrient reservoir whenever the pH has drifted above your target range, typically 5.8-6.2 for flowering crops in hydro or coco, and it lowers pH while also contributing a small amount of usable phosphorus rather than acting as dead weight in the mix.\u003c\/p\u003e\n\n\u003cp\u003eIt's designed to be used alongside the rest of the Mills range, including in the Mills Full Coco Kit, but works as a standalone pH corrector with any base nutrient. Add it gradually and re-test, phosphoric acid-based pH-down products can overshoot if dosed too heavily in one go.\u003c\/p\u003e\n\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003ePhosphoric-acid pH-down products are the standard approach across the industry.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVersus House \u0026amp; Garden's pH-down, both use a phosphoric acid base and work the same way; Mills is formulated to match the rest of the Mills feeding range.\u003c\/li\u003e\n\u003cli\u003eVersus General Hydroponics pH Down, dosing behaviour is broadly similar since both rely on phosphoric acid as the active ingredient.\u003c\/li\u003e\n\u003cli\u003eVersus using raw phosphoric acid concentrate, a formulated product like this is easier to dose accurately without risking a big pH swing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt does the same job as most pH-down products on the market, the main reason to pick this one is running it alongside the rest of the Mills coco or hydro range.\u003c\/p\u003e\n\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eSmall, gradual additions with re-testing between doses is the safest approach with any phosphoric acid pH-down.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDosing\u003c\/strong\u003e\u003cbr\u003eAdd a small amount to your reservoir, mix thoroughly, then re-test pH before adding more. Target 5.8-6.2 for flowering in most hydro and coco setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to use it\u003c\/strong\u003e\u003cbr\u003eCheck reservoir pH daily during flower, tap water and nutrient concentrates both tend to push pH upward over a few days.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003cbr\u003eKeep the bottle tightly capped and away from metal fittings, phosphoric acid is corrosive to some metals over time.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eActive ingredient: \u003cstrong\u003ePhosphoric acid (approx. 59%)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePhosphorus oxide (P2O5) content: \u003cstrong\u003eApprox. 42.5%\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTarget pH range: \u003cstrong\u003e5.8-6.2 for flowering\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGrowth stage: \u003cstrong\u003eFlowering\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBottle size: \u003cstrong\u003e1 Litre\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturer: \u003cstrong\u003eMills Nutrients, Netherlands\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGrowers running Mills Basis A\/B or the Mills Full Coco Kit who want a matched pH-down\u003c\/li\u003e\n\u003cli\u003eAnyone whose reservoir pH consistently drifts upward during flower\u003c\/li\u003e\n\u003cli\u003eHydro and coco growers needing to hold pH in the 5.8-6.2 range\u003c\/li\u003e\n\u003cli\u003eGrowers who want a formulated pH-down rather than dosing raw acid\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot needed if your water naturally sits in range or you're already using another brand's matched pH-down.\u003c\/p\u003e\n\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eIt's a no-frills pH corrector that does exactly what the name says, useful to have on the shelf during flower whether or not you're running the rest of the Mills range.\u003c\/p\u003e\n\u003cp\u003eWorth picking up alongside your base nutrient rather than waiting until pH drifts out of range mid-flower.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"MILLS","offers":[{"title":"Default Title","offer_id":47916512641194,"sku":"762360","price":15.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/762360_-_ph-_1_litre_1_af8edc58-9f5d-4b34-ab00-52c44c4bf952.jpg?v=1769194863"},{"product_id":"mills-nutrients-start","title":"Mills Nutrients - Start-R","description":"\u003csection class=\"gh-product-listing\"\u003e\n\n\u003ch2\u003eMills Nutrients Start-R — Organo-Mineral Root Stimulator for Seedlings and Vegetative Growth\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Growers building strong root structure from seed or cutting stage through early flowering\u003c\/p\u003e\n\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003eStart-R is one we rate highly for getting plants off to a proper start. It combines organic kelp with mineral nutrition in a way that just works — you get fast root development without forcing soft, weak growth. Used from week one, it handles transplant shock brilliantly and builds foundations that make everything downstream easier to manage. One we sell a lot of for growers who don't want to guess whether their seedlings are settling in properly.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eMills Start-R is an \u003cstrong\u003eorgano-mineral root stimulator and vegetative growth booster\u003c\/strong\u003e designed to support plants from seedling and cutting stage through early flowering. It blends premium Irish kelp with humic acids, fulvic acids, and amino acids to accelerate root development while improving nutrient uptake and stress resistance across soil, coco, and hydroponic systems.\u003c\/p\u003e\n\n\u003cp\u003eThe core logic is simple: strong roots early on make everything that follows easier. Better nutrient uptake, quicker establishment, faster recovery from transplant shock, and more resilient plants when they hit the veg stage hard.\u003c\/p\u003e\n\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eStart-R sits in the \u003cstrong\u003emid-premium root enhancement category\u003c\/strong\u003e, positioned between entry-level boosters and premium professional-grade alternatives.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOrgano-mineral blend delivers both immediate mineral uptake and long-term organic soil conditioning\u003c\/li\u003e\n\u003cli\u003eIrish kelp source is naturally rich in auxins and cytokinins — plant growth hormones that outperform synthetic alternatives\u003c\/li\u003e\n\u003cli\u003eWorks synergistically with Mills Basis A\u0026amp;B rather than as a standalone system, reducing complexity\u003c\/li\u003e\n\u003cli\u003eSignificantly lower cost per litre than premium competitors like Canna Rhizotonic, with comparable results\u003c\/li\u003e\n\u003cli\u003eExtends beyond pure root boosters — covers seedling establishment, vegetative vigour, and transplant recovery\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eSeedlings and cuttings\u003c\/strong\u003e\u003cbr\u003eApply from week one at 1ml per litre of water. Start-R works best with consistent, measured dosing rather than heavy-handed application. This stage is about establishing fine root hair development and stress resilience, not forcing pace.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eVegetative growth through early flowering\u003c\/strong\u003e\u003cbr\u003eContinue at 1ml per litre throughout veg and up to the end of the first week of bloom. After week two of flowering, drop it — the plant's energy shifts and additional auxins become counterproductive.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAll growing mediums\u003c\/strong\u003e\u003cbr\u003eWorks cleanly in soil, coco coir, hydroponics, and soilless systems. No medium-specific adjustments needed. The humic and fulvic acids condition soil and improve nutrient cycling; the amino acids perform the same roles in inert media.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSynergy with Mills base nutrients\u003c\/strong\u003e\u003cbr\u003eStart-R is formulated to complement Mills Basis A\u0026amp;B. The nitrogen sources in Start-R shift the overall NPK profile upward when used with the base feed, creating a well-rounded vegetative diet without needing separate nitrogen boosters.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNPK Ratio: \u003cstrong\u003e5-0-0.5\u003c\/strong\u003e (increases when combined with Mills Basis A\u0026amp;B)\u003c\/li\u003e\n\u003cli\u003eKey active ingredients: \u003cstrong\u003eAscophyllum nodosum (cold-pressed Irish kelp), humic acids, fulvic acids, L-amino acids\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eApplication window: \u003cstrong\u003eSeedling stage through end of week 2 flowering\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDosage: \u003cstrong\u003e1ml per litre of water\u003c\/strong\u003e (or 4ml per gallon)\u003c\/li\u003e\n\u003cli\u003eGrowing mediums: \u003cstrong\u003eSoil, coco coir, hydroponics, soilless systems\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePackaging: \u003cstrong\u003eHeavy-duty polyethylene with collapsible handles and dual pour\/vent tops\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAvailable sizes: \u003cstrong\u003e1L, 5L, 10L, 20L, plus commercial bulk options\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePlant growth hormones: \u003cstrong\u003eAuxins (cell enlargement, root inception) and cytokinins (growth regulation, auxin distribution)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSeedling growers wanting reliable establishment without overcomplicating early-stage nutrition\u003c\/li\u003e\n\u003cli\u003ePropagators managing cuttings who need transplant shock reduction\u003c\/li\u003e\n\u003cli\u003eSoil and coco growers seeking organic-mineral balance over purely synthetic options\u003c\/li\u003e\n\u003cli\u003eHydroponic enthusiasts building complete Mills nutrient systems (A\u0026amp;B + additives)\u003c\/li\u003e\n\u003cli\u003eFirst-time growers wanting professional-grade foundational support without premium pricing\u003c\/li\u003e\n\u003cli\u003eCommercial small-scale growers managing microgreens or specialty propagation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eParticularly well suited to setups where \u003cstrong\u003eroot development and plant resilience matter more than pushing growth speed at the outset\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eStart-R does what it should without fuss. It's a proper root stimulator that works because of what's in it — Irish kelp, amino acids, and chelating acids that improve nutrient availability — not because of marketing. You use it, roots develop properly, plants establish with confidence, and you move into veg from a position of strength.\u003c\/p\u003e\n\n\u003cp\u003eIf you're running seedlings or cuttings and want less guesswork about whether they're establishing properly, this is worth picking up. End-of-line stock means you're getting professional-grade root stimulation at a price that actually makes sense compared to premium alternatives. Good time to buy while clearance stock lasts.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"MILLS","offers":[{"title":"1 Litre","offer_id":47916663931050,"sku":"762210","price":34.99,"currency_code":"GBP","in_stock":true},{"title":"5 Litre","offer_id":47916663963818,"sku":"762220","price":158.99,"currency_code":"GBP","in_stock":true},{"title":"250ml","offer_id":47916663996586,"sku":"762200","price":15.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/mills_nutrients_start-r_1_litre_41c1ffa0-6ebb-44f8-b5fa-ea59da470e37.jpg?v=1769198273"},{"product_id":"mills-nutrients-basis-a-b-soft-water","title":"Mills Nutrients - Basis A\u0026B (Soft Water)","description":"\u003csection class=\"gh-product-listing\"\u003e\n\n\u003ch2\u003eMills Nutrients Basis A\u0026amp;B (Soft Water) — Two-Part Organo-Mineral Base Nutrient\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Growers using soft water or RO systems who want a forgiving, complete nutrient solution from seed to finish\u003c\/p\u003e\n\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003e\nMills Basis A\u0026amp;B is exactly what a two-part nutrient should be: balanced, straightforward, and honest. The soft water formulation takes the guesswork out of calcium and magnesium deficiencies, and the organo-mineral blend gives you the control of hydroponics without the headache of synthetic nutrient creep. One we recommend a lot for growers moving past single-part feeds.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eMills Basis A\u0026amp;B (Soft Water) is a \u003cstrong\u003econcentrated two-part base nutrient\u003c\/strong\u003e formulated specifically for low-mineral water supplies, RO systems, or anywhere your starting EC sits below 0.3. As an \u003cstrong\u003eorgano-mineral NPK feed\u003c\/strong\u003e, it combines mineral salts with organic additives to deliver complete nutrition across the entire growing cycle — vegetative through flowering — without requiring stage-specific nutrient swaps. The soft water version adds extra calcium and magnesium to prevent the deficiencies that commonly plague growers in soft water regions. Use equal parts A and B, dial in your EC, and let it do the job.\u003c\/p\u003e\n\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eMills Basis sits in the \u003cstrong\u003epremium mid-tier\u003c\/strong\u003e of two-part base nutrients, with some genuine technical advantages.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs General Hydroponics Flora:\u003c\/strong\u003e Flora is cheaper and easier to find, but requires three parts and builds up over time. Basis is cleaner, simpler (two parts, one ratio), and won't accumulate in your medium.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs Canna Hydro Vega\/Flores:\u003c\/strong\u003e Canna forces you to buy separate growth and bloom formulas. Basis does both at a 1:1 ratio, saving money and complexity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs House \u0026amp; Garden Hydro A\u0026amp;B:\u003c\/strong\u003e H\u0026amp;G is ultra-concentrated and premium-priced. Basis hits the same quality bracket for less outlay.\u003c\/li\u003e\n\u003cli\u003eThe organo-mineral blend absorbs across a wider pH range than purely synthetic feeds, so your pH doesn't need to be laser-tight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eMills Basis A\u0026amp;B is straightforward to use, but the two-part system needs respect.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDosing basics\u003c\/strong\u003e\u003cbr\u003e\nUse between \u003cstrong\u003e1ml and 3.5ml per litre of water\u003c\/strong\u003e for each part (equal amounts). Always add Part A first, mix it thoroughly, then add Part B. Never mix them together in concentrate form. The exact dose depends on your target EC and water quality — start at 1ml\/L and measure with an EC meter until you hit your target strength.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWater quality check\u003c\/strong\u003e\u003cbr\u003e\nThis is the soft water version. If your tap water EC is already 0.3mS\/cm or higher, switch to the hard water formula. If you're running RO or very soft tap water, you're in the right place.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eVegetative stage\u003c\/strong\u003e\u003cbr\u003e\nUse the same A\u0026amp;B ratio throughout. The NPK profile (3-0-1 and 0-4-3 combined) supports strong stem and root development without pushing it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFlowering stage\u003c\/strong\u003e\u003cbr\u003e\nKeep the same 1:1 A\u0026amp;B ratio. Unlike three-part systems, you don't need to shuffle bottles around. The balanced mineral and organic profile adapts to flowering naturally.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMedia compatibility\u003c\/strong\u003e\u003cbr\u003e\nWorks across hydro, coco, soil, and hand-watering. The organo-mineral formula doesn't accumulate, so you can push hard without salt buildup poisoning your medium.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003epH management\u003c\/strong\u003e\u003cbr\u003e\nThis is where Mills Basis earns its reputation. The formulation absorbs across a wider pH window than synthetic-only feeds. You've still got to monitor pH, but you don't need pixel-perfect control. Aim for 5.5–6.5 and you'll be fine.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Two-part organo-mineral concentrate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormulation:\u003c\/strong\u003e Basis A (NPK 3-0-1) + Basis B (NPK 0-4-3)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey constituents:\u003c\/strong\u003e Part A contains EDTA ferrous red iron and elevated calcium. Part B contains elevated magnesium and molybdenum.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater specification:\u003c\/strong\u003e Formulated for soft water (EC below 0.3mS\/cm). Separate hard water version available.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDosing rate:\u003c\/strong\u003e 1–3.5ml per litre (equal parts A and B)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH absorption range:\u003c\/strong\u003e Wider than standard synthetic feeds (optimised across 5.5–6.5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNutrient accumulation:\u003c\/strong\u003e Bio-mineral formula prevents salt buildup in growing medium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize options:\u003c\/strong\u003e 1 litre, 5 litre, 10 litre, 20 litre\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment required:\u003c\/strong\u003e EC meter and pH meter for proper administration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e Hydroponics, coco, soil, hand-watering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGrowers in soft water areas (most of the UK, parts of Scotland, Wales, south-west England)\u003c\/li\u003e\n\u003cli\u003eRO water users who need calcium and magnesium supplementation\u003c\/li\u003e\n\u003cli\u003eAnyone stepping up from single-part feeds to proper two-part systems\u003c\/li\u003e\n\u003cli\u003eGrowers who want one nutrient that handles veg and flowering without switching bottles\u003c\/li\u003e\n\u003cli\u003eExperienced growers tired of synthetic nutrient creep and medium accumulation\u003c\/li\u003e\n\u003cli\u003eAnyone running multiple rooms where simplicity saves time and money\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eParticularly well suited to setups where \u003cstrong\u003ewater quality matters, pH management needs to be forgiving, and you want a complete nutrient in minimal bottles\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eMills Basis A\u0026amp;B is one of those products that doesn't shout but quietly delivers. The soft water formulation shows real thought — most growers don't realise how badly their water quality is undermining their nutrition until they switch to a properly targeted feed. The organo-mineral approach gives you precision without the synthetic baggage, and the fact it works at a 1:1 ratio from veg to harvest means less guessing and fewer bottles cluttering your shelf.\u003c\/p\u003e\n\u003cp\u003eIf you're in a soft water area or running RO, this is worth picking up. It's a solid foundation that covers the basics properly and won't rinse your budget on premium branding. Good time to buy while clearance stock lasts.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"MILLS","offers":[{"title":"1 Litre A \u0026 1 Litre B","offer_id":47916664324266,"sku":"762165","price":24.99,"currency_code":"GBP","in_stock":true},{"title":"5 Litre A \u0026 5 Litre B","offer_id":47916664357034,"sku":"762135","price":64.99,"currency_code":"GBP","in_stock":true},{"title":"10 Litre A \u0026 10 Litre B","offer_id":47916664389802,"sku":"762185","price":109.99,"currency_code":"GBP","in_stock":true},{"title":"20 Litre A \u0026 20 Litre B","offer_id":47916664422570,"sku":"762150","price":159.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/mills_basis_soft_water_a_b_1_litre_65444769-2656-482f-8ad4-9b18bc7ce243.jpg?v=1769198281"},{"product_id":"mills-nutrients-basis-a-b-hard-water","title":"Mills Nutrients - Basis A\u0026B (Hard Water)","description":"\u003csection class=\"gh-product-listing\"\u003e\n\n\u003ch2\u003eMills Nutrients Basis A\u0026amp;B (Hard Water) — Two-Part Organo-Mineral Base Nutrients for UK Growers\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Hard water growers wanting a reliable, easy-to-use two-part nutrient system that works across soil, coco, and hydro without the premium price tag\u003c\/p\u003e\n\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003e\nThis is a solid workhorse nutrient system. Mills Basis A\u0026amp;B Hard Water does exactly what it should — it's formulated specifically for UK tap water, it's straightforward to use, and it doesn't overcomplicate things. If you're running hard water and want a two-part base that covers veg and flower without faffing about, this is one we recommend regularly to growers who want results without the faff.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eMills Basis A\u0026amp;B (Hard Water) is a \u003cstrong\u003econcentrated two-part organo-mineral base nutrient\u003c\/strong\u003e designed specifically for growers in hard water areas. It combines mineral salts with organic additives — giving you the control of hydroponics with the forgiving nature of organic growing. The hard water formulation is pre-balanced to handle high calcium and magnesium content in your tap water, which means you're not fighting nutrient lockout before you've even started. Works across all growing media: soil, coco, and hydro. One system, all stages, all methods.\u003c\/p\u003e\n\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eThis sits squarely in the \u003cstrong\u003emid-range two-part nutrient market\u003c\/strong\u003e — proper kit at sensible money.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOrgano-mineral blend means fewer nutrient buildups than fully synthetic systems\u003c\/li\u003e\n\u003cli\u003eHard water formulation gives you an advantage UK growers don't get with standard A\u0026amp;B kits\u003c\/li\u003e\n\u003cli\u003eMore forgiving pH range than competitor systems — easier to dial in\u003c\/li\u003e\n\u003cli\u003eRequires double the dose of some competitors, but that's reflected in the pricing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAgainst General Hydroponics FloraDuo or Advanced Nutrients, you're trading slightly higher dosing for lower cost and UK-specific water chemistry. Against CANNA, you're getting simpler mixing with less faffing between veg and flower bottles.\u003c\/p\u003e\n\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eMills Basis A\u0026amp;B is straightforward, but mixing order matters:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMixing your nutrient solution\u003c\/strong\u003e\u003cbr\u003e\nNever mix parts A and B together dry. Add Part A to your water first, mix thoroughly, then add Part B. Use equal parts of both — scale your dosing rate from 1ml per litre up to 3.5ml per litre depending on plant stage and feeding strength.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor vegetative growth\u003c\/strong\u003e\u003cbr\u003e\nRun lighter feeds in early veg (1-1.5ml\/L), then build strength as plants establish. The blend promotes healthy root development and strong stem growth without pushing unnecessary flowering signals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor flowering\u003c\/strong\u003e\u003cbr\u003e\nMaintain full strength (2.5-3.5ml\/L) throughout. The A provides calcium and red iron for structural support; the B delivers magnesium and other essentials for resin and material production.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAcross different media\u003c\/strong\u003e\u003cbr\u003e\nWorks identically in soil, coco, or hydroponics. Hand-fed pots, drip systems, or full flood tables — the nutrient blend performs. Coco and hydro growers should run feeds to mild runoff; soil growers can feed slightly lighter and let the medium buffer naturally.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003epH management\u003c\/strong\u003e\u003cbr\u003e\nTarget pH 5.6-6.2 in hydroponic systems. The hard water formulation handles alkaline tap water better than soft water formulas, but you'll still want to check and adjust depending on your actual water source.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003cbr\u003e\nKeep both parts in a dark, cool place. Concentrate will last years if stored properly — no special fridge needed.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFormat: \u003cstrong\u003eTwo-part concentrate (A \u0026amp; B)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAvailable sizes: \u003cstrong\u003e1L, 5L, 10L\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDosing rate: \u003cstrong\u003e1–3.5ml per litre (equal parts A \u0026amp; B)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eType: \u003cstrong\u003eOrgano-mineral NPK base nutrient\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eNitrogen (N): \u003cstrong\u003eDual-source formulation\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePhosphate (P₂O₅): \u003cstrong\u003e4.1% w\/w\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePotassium (K₂O): \u003cstrong\u003e2.7% w\/w\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCalcium (Ca): \u003cstrong\u003e4% (Part A)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMagnesium (MgO): \u003cstrong\u003e0.7% (Part B)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIron (Fe): \u003cstrong\u003e2% red iron (Part A)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSulphur (SO₃): \u003cstrong\u003e1.4% w\/w\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTrace elements: \u003cstrong\u003eBoron, copper, manganese, molybdenum, zinc\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eActive ingredients: \u003cstrong\u003eL-amino acids, humic \u0026amp; fulvic acids, root enhancers\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTarget pH: \u003cstrong\u003e5.6–6.2 (hydroponic systems)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFormulation: \u003cstrong\u003eHard water (EC starting point \u0026gt;0.3)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMedia compatibility: \u003cstrong\u003eSoil, coco, hydroponics, all watering methods\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGrowers in hard water areas tired of fighting mineral buildup and pH swings\u003c\/li\u003e\n\u003cli\u003eTwo-part nutrient users who want simplicity — no switching between veg and flower bottles\u003c\/li\u003e\n\u003cli\u003eHydroponic, soil, and coco growers wanting one system that works across all media\u003c\/li\u003e\n\u003cli\u003eBudget-conscious growers who don't want to pay premium brand markup for solid results\u003c\/li\u003e\n\u003cli\u003eIntermediate growers ready to move beyond all-in-one feeds but not ready for complex multi-part systems\u003c\/li\u003e\n\u003cli\u003eGrowers in the UK and Europe where hard tap water is standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot ideal for soft water areas — grab the soft water version instead. Also not the best choice if you want pre-balanced veg and flower bottles (that's where CANNA's system has an edge).\u003c\/p\u003e\n\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eMills Basis A\u0026amp;B Hard Water is what a good two-part nutrient should be: simple to mix, forgiving across media, and actually designed for the water that comes out of UK taps. It's not the cheapest per ml, but you're paying for a system that works without drama.\u003c\/p\u003e\n\u003cp\u003eThe organo-mineral blend means less nutrient salt creep, the hard water formulation saves you pH headaches, and it delivers results across veg and flower without needing a new bottle every eight weeks. Worth picking up while this stock lasts — particularly if you've been fighting hard water nutrient lockout with generic systems.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"MILLS","offers":[{"title":"1 Litre A \u0026 1 Litre B","offer_id":47916664783018,"sku":"762160","price":24.99,"currency_code":"GBP","in_stock":true},{"title":"5 Litre A \u0026 5 Litre B","offer_id":47916664815786,"sku":"762130","price":59.99,"currency_code":"GBP","in_stock":true},{"title":"10 Litre A \u0026 10 Litre B","offer_id":47916664848554,"sku":"762180","price":119.99,"currency_code":"GBP","in_stock":true},{"title":"20 Litre A \u0026 20 Litre B","offer_id":47916664881322,"sku":"762110","price":179.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/mills_nutrients_basis_hard_water_a_b_1_litre_71b1eba3-878d-47a9-98af-e04b87bb6893.jpg?v=1769198290"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/collections\/mills_nutrients.webp?v=1646290148","url":"https:\/\/growershouse.co.uk\/collections\/mills-nutrients-1.oembed","provider":"Growers House ","version":"1.0","type":"link"}