{"product_id":"photosynthesis-plus-3-8l","title":"Photosynthesis Plus 3.8L","description":"\u003csection class=\"gh-product-listing\"\u003e\n\u003ch2\u003ePhotosynthesis Plus 3.8L — Microbial Inoculant for Root Zone \u0026amp; Foliar Boosting\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Growers wanting to unlock better nutrient uptake, photosynthetic efficiency, and plant stress tolerance without adding complexity to their feed 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 one of those products that sits nicely between \"nice to have\" and \"actually makes a difference\". A proper microbial consortium that works in soil, coco, and hydro without fussing about. The photosynthetic bacteria angle is different from phosphorus boosters — you're genuinely improving how plants use light. One growers recommend a lot once they've tried it.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003ePhotosynthesis Plus is a \u003cstrong\u003eliquid microbial inoculant\u003c\/strong\u003e containing a carefully fermented consortium of beneficial bacteria strains, including photosynthetic bacteria (Rhodopseudomonas palustris) and Bacillus species. It's designed to improve nutrient uptake, boost chlorophyll production, strengthen plant immunity, and help plants handle stress — all without needing to overhaul your nutrient schedule. The 3.8L format is the bulk size, built for growers running multiple systems or larger spaces where microbial boosting makes real economic sense.\u003c\/p\u003e\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003ePhotosynthesis Plus sits in the \u003cstrong\u003emicrobial inoculant\u003c\/strong\u003e category, but it's distinct from phosphorus-focused boosters and fungal products.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs Mammoth P:\u003c\/strong\u003e Mammoth P targets phosphorus mobilisation specifically. Photosynthesis Plus works on overall photosynthetic efficiency and broad nutrient cycling — different jobs, both useful\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs Fungi-based products (MycoBoost, Unleash):\u003c\/strong\u003e Those rely on mycorrhizal fungi and Trichoderma. Photosynthesis Plus is bacteria-focused, working directly in the root zone and as a foliar feed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs SLF-100:\u003c\/strong\u003e Commonly paired together. Many growers run both for synergistic effect\u003c\/li\u003e\n\u003cli\u003eWorks across all growing mediums — soil, coco, hydro, NFT, drip systems\u003c\/li\u003e\n\u003cli\u003eActive, living culture that continues working in the bottle (which is why it smells like a composting yard — that's bacterial activity, not a fault)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003ePhotosynthesis Plus works two ways: root zone feeding and foliar spray. It's flexible enough to fit most growing schedules.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRoot zone \/ Irrigation applications\u003c\/strong\u003e\u003cbr\u003eAdd 2 fl oz per 5 gallons of water for initial applications, then 1 fl oz per 5 gallons weekly or at water changes. Works in hand-watered systems, drip lines, and hydroponic reservoirs equally well. Some growers find they can reduce nutrient strength once they start using it regularly — test and dial in what works for your setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFoliar spray applications\u003c\/strong\u003e\u003cbr\u003eMix 1–2 fl oz per gallon of water and spray every 2–4 weeks, or at your regular watering interval. Use roughly 1–2 gallons per 1,000 sq ft depending on coverage. Light spray is fine — you're inoculating the leaf surface and supporting uptake, not drenching.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStorage and longevity\u003c\/strong\u003e\u003cbr\u003eShelf-stable for two years unopened. Once opened, keep it sealed tightly and it'll last around a year. It's a living product, so the culture is active in the bottle — that's why it needs proper closure and why it smells earthy and funky. That's working, not broken.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntegration with other products\u003c\/strong\u003e\u003cbr\u003ePhotosynthesis Plus works well alongside other microbial boosters. Many growers use it with Mammoth P or SLF-100 for layered microbial coverage. No antagonism reported — they complement each other.\u003c\/p\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVolume: \u003cstrong\u003e3.8L (approximately 1 US gallon equivalent)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eActive culture: \u003cstrong\u003eTwo select photosynthetic bacterial strains + four Bacillus strains, fermented together over six days\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKey strain: \u003cstrong\u003eRhodopseudomonas palustris (photosynthetic bacteria)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eShelf life: \u003cstrong\u003e2 years unopened; 2.5 years if stored correctly\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOnce opened: \u003cstrong\u003eapproximately 1 year if kept sealed and in original container\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDosage (root zone): \u003cstrong\u003e2 fl oz per 5 gallons initial; 1 fl oz per 5 gallons weekly thereafter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDosage (foliar): \u003cstrong\u003e1–2 fl oz per gallon of water; apply every 2–4 weeks\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMedium compatibility: \u003cstrong\u003eSoil, coco, hydroponic (DWC, NFT, drip systems)\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 running hydroponic or coco systems where light efficiency and nutrient cycling matter\u003c\/li\u003e\n\u003cli\u003eAnyone looking to improve plant stress tolerance without pharmaceutical interventions\u003c\/li\u003e\n\u003cli\u003eGrowers already using Mammoth P or SLF-100 who want to layer in photosynthetic bacteria\u003c\/li\u003e\n\u003cli\u003eLarger operations or multi-system growers where the 3.8L bulk size makes economic sense\u003c\/li\u003e\n\u003cli\u003eGrowers willing to let the biology do some of the heavy lifting rather than pushing nutrients harder\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eThis is a proper microbial product that does what it claims. The photosynthetic bacteria angle is legitimate — you're not just improving root colonisation, you're genuinely improving how plants capture light energy. That translates to better growth, better stress handling, and in many cases, lower nutrient requirements.\u003c\/p\u003e\n\u003cp\u003eThe 3.8L format is worth it if you're running multiple systems or treating a larger space regularly. You'll use it. Growers who've committed to it report noticeable results within 2–3 weeks, and it integrates cleanly into most feeding schedules without drama. Worth picking up while clearance stock lasts.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"MICROBE LIFE HYDROPONICS","offers":[{"title":"Default Title","offer_id":47916370428074,"sku":"46865","price":75.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/PhotosynthesisPlus_b6016f5b-0e25-4911-a2f6-f651ef039676.jpg?v=1769192583","url":"https:\/\/growershouse.co.uk\/products\/photosynthesis-plus-3-8l","provider":"Growers House ","version":"1.0","type":"link"}