{"product_id":"veg-bloom-stackswell","title":"Veg+Bloom - Stax (AKA Stackswell)","description":"\u003csection class=\"gh-product-listing\"\u003e\n\n\u003ch2\u003eVeg+Bloom Stax — Commercial-Grade Calcium Magnesium Powder for Concentrated Growing Power\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Experienced growers and commercial operations after a concentrated, pH-stable calcium-magnesium additive that cuts shipping costs and eliminates guesswork\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 proper kit for growers who understand nutrient profiles and want commercial-grade results without the premium liquid price tag. Veg+Bloom Stax consolidates multiple functions into one powder — calcium, magnesium, humic acids, and wetting agents all at once. If you're running scale and margins matter, this is worth your attention.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eVeg+Bloom Stax (formerly Stackswell) is a \u003cstrong\u003econcentrated powder nutrient additive\u003c\/strong\u003e manufactured by Hydroponic Research using pharmaceutical and food-grade components only. It's a multi-function blend of humic acids, calcium, magnesium, and carbohydrates designed to encourage faster growth, bigger yields, and stronger plant structure from early veg right through flowering. Because it's powdered, not liquid-suspended, you're paying for active nutrients, not water weight — which means significantly lower shipping costs and better value per gram than traditional liquid CalMag solutions.\u003c\/p\u003e\n\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eThis sits in the \u003cstrong\u003ecommercial-grade, concentrated additive\u003c\/strong\u003e category, not entry-level CalMag territory.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePowder format vs. liquid competitors = lower water content, higher concentration, easier to ship\u003c\/li\u003e\n\u003cli\u003ePharmaceutical-grade manufacturing vs. standard hydroponic additives = consistency and purity you can rely on at scale\u003c\/li\u003e\n\u003cli\u003e8-0-0 NPK formulation specifically designed to slot into existing nutrient schedules without disrupting balance\u003c\/li\u003e\n\u003cli\u003ePre-blended pH buffer means you're working in 5.6–6.5 range straight out — no adjustment needed\u003c\/li\u003e\n\u003cli\u003eReplaces separate calcium, magnesium, and humic acid purchases in one product\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you've been buying liquid CalMag and powder base nutrients separately, Stax consolidates the former into one reliable powder.\u003c\/p\u003e\n\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eVeg+Bloom Stax works across all growing mediums and hydroponic systems:\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDosage\u003c\/strong\u003e\u003cbr\u003e\nUse 1 gram of powder per 4 litres of reservoir water or nutrient solution. Start from early veg and continue through to the second week of flower. Simple as that — no complex mixing ratios.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHydroponic systems\u003c\/strong\u003e\u003cbr\u003e\nWorks cleanly in all setups: NFT, flood and drain, drip irrigation, deep water culture. The concentrated format is particularly cost-effective when you're running multiple reservoirs or larger volumes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCoco and soil\u003c\/strong\u003e\u003cbr\u003e\nCompatible with both, though hydroponic growers are the primary target market. If you're running coco drip systems, this eliminates the need for separate calcium-magnesium supplementation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNutrient compatibility\u003c\/strong\u003e\u003cbr\u003e\nCompatible with all hydroponic nutrient base feeds. If your base nutrients already contain NPK, reduce Stax strength slightly to avoid overload. You won't need additional CalMag products if you're using this — it does that job.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003epH stability\u003c\/strong\u003e\u003cbr\u003e\nPre-formulated to work within a 5.6–6.5 range. Most growers report minimal pH adjustment needed once this is dissolved into solution.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct name: \u003cstrong\u003eVeg+Bloom Stax (formerly Stackswell)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturer: \u003cstrong\u003eHydroponic Research, California\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eForm: \u003cstrong\u003eConcentrated powder\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eNPK ratio: \u003cstrong\u003e8-0-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eActive components: \u003cstrong\u003eHumic acids, calcium, magnesium, carbohydrates, nitrogen\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAvailable sizes: \u003cstrong\u003e1lb (453g), 5lb (2.275kg), 25lb (11.36kg — made to order)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003epH range: \u003cstrong\u003e5.6–6.5 (pre-buffered)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturing standard: \u003cstrong\u003ePharmaceutical and food-grade components only, batch-tested for consistency and purity\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDosage rate: \u003cstrong\u003e1 gram per 4 litres\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eApplication window: \u003cstrong\u003eEarly veg through second week of flower\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\u003eCommercial-scale growers where margins and shipping logistics matter\u003c\/li\u003e\n\u003cli\u003eExperienced hydroponic cultivators looking to consolidate multiple additives into one product\u003c\/li\u003e\n\u003cli\u003eAnyone running multiple reservoirs or large-volume systems where per-gram cost efficiency pays off\u003c\/li\u003e\n\u003cli\u003eGrowers who want pharmaceutical-grade nutrient consistency without compromising results\u003c\/li\u003e\n\u003cli\u003eOperations currently buying liquid CalMag and considering a powder alternative\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is \u003cstrong\u003enot\u003c\/strong\u003e entry-level kit — it's built for growers who understand nutrient profiles and want professional-grade performance at scale.\u003c\/p\u003e\n\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eVeg+Bloom Stax is proper concentrated nutrient powder from a manufacturer that knows what serious growers actually need. The pharmaceutical-grade quality, pH stability, and multi-function design make it a solid choice for anyone running hydroponic systems at scale. You're not paying for marketing or packaging — you're paying for active nutrients and consistency.\u003c\/p\u003e\n\u003cp\u003eIf you're experienced with hydroponic feeding and want to cut costs on shipping and simplify your additive shelf, this is worth looking at. Good time to pick up while stock lasts.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"VEG+BLOOM","offers":[{"title":"25lb","offer_id":47916555894954,"sku":"810349","price":832.99,"currency_code":"GBP","in_stock":true},{"title":"1lb","offer_id":47916555927722,"sku":"810352","price":40.99,"currency_code":"GBP","in_stock":false},{"title":"2.2lb","offer_id":47916555960490,"sku":"810350","price":92.99,"currency_code":"GBP","in_stock":true},{"title":"5lb","offer_id":47916555993258,"sku":"810351","price":184.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/veg_bloom_stax_1_75985d72-a152-47ca-83eb-bbddbf04debc.jpg?v=1769195968","url":"https:\/\/growershouse.co.uk\/products\/veg-bloom-stackswell","provider":"Growers House ","version":"1.0","type":"link"}