{"product_id":"grenade-black-250ml","title":"Grenade Black | PK Booster","description":"\u003ch3\u003eGrenade Black - Advanced Flowering Additive\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrenade Black\u003c\/strong\u003e is a concentrated \u003cstrong\u003eorgano-mineral flowering additive\u003c\/strong\u003e developed to support flower development, improve crop density and help plants achieve their natural genetic potential. Manufactured in the UK, this advanced \u003cstrong\u003ePK bloom booster\u003c\/strong\u003e combines mineral nutrients with amino acids, phytohormones and other biological inputs to complement existing feeding programmes during the flowering stage.\u003c\/p\u003e\n\n\u003cp\u003eFormulated as an alternative to synthetic chemical hardeners, \u003cstrong\u003eGrenade Black\u003c\/strong\u003e focuses on supporting natural plant development rather than chemically altering crop growth. Its balanced combination of \u003cstrong\u003enitrogen, phosphorus and potassium\u003c\/strong\u003e, with a guaranteed \u003cstrong\u003eNPK analysis of 3-9-18\u003c\/strong\u003e, provides additional flowering-stage nutrition when plants are developing and maturing their flowers.\u003c\/p\u003e\n\n\u003cp\u003eThe formula is designed to support plant energy processes, including \u003cstrong\u003eATP production\u003c\/strong\u003e, and encourage secondary metabolite development. Grenade Black is marketed to growers seeking \u003cstrong\u003edenser flowers, improved harvest quality and enhanced flowering performance\u003c\/strong\u003e while maintaining their existing nutrient programme.\u003c\/p\u003e\n\n\u003cp\u003eWith a low application rate of just \u003cstrong\u003e0.2–0.4ml per litre\u003c\/strong\u003e, Grenade Black offers economical supplementation during \u003cstrong\u003eweeks 3–7 of flowering\u003c\/strong\u003e. It is designed for compatibility with all nutrient regimes, making it a versatile addition to feeding programmes for indoor cultivation, greenhouse growing and professional horticulture.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced organo-mineral flowering additive\u003c\/strong\u003e developed to support flower development and harvest density.\u003c\/li\u003e\n\u003cli\u003eFormulated as an alternative to \u003cstrong\u003esynthetic chemical flower hardeners\u003c\/strong\u003e, with an emphasis on supporting natural crop development.\u003c\/li\u003e\n\u003cli\u003eGuaranteed \u003cstrong\u003eNPK analysis of 3-9-18\u003c\/strong\u003e, supplying nitrogen, phosphorus and potassium.\u003c\/li\u003e\n\u003cli\u003eCombines \u003cstrong\u003emineral nutrients, amino acids, phytohormones and biological inputs\u003c\/strong\u003e in a concentrated liquid formulation.\u003c\/li\u003e\n\u003cli\u003eDesigned to encourage \u003cstrong\u003edenser flower development\u003c\/strong\u003e and support healthy yields.\u003c\/li\u003e\n\u003cli\u003eFormulated to support plant energy processes associated with \u003cstrong\u003eATP production\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDesigned to enhance \u003cstrong\u003esecondary metabolite production\u003c\/strong\u003e during flowering.\u003c\/li\u003e\n\u003cli\u003eSupports the natural expression of a plant's \u003cstrong\u003egenetic potential\u003c\/strong\u003e without relying on conventional chemical hardening additives.\u003c\/li\u003e\n\u003cli\u003eRecommended for use during \u003cstrong\u003eweeks 3–7 of the flowering cycle\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eAdjustable application rate of \u003cstrong\u003e0.2–0.4ml per litre\u003c\/strong\u003e of nutrient solution.\u003c\/li\u003e\n\u003cli\u003eManufacturer recommends increasing to \u003cstrong\u003e0.4ml per litre during flowering weeks 6 and 7\u003c\/strong\u003e to support flower density.\u003c\/li\u003e\n\u003cli\u003eCompatible with \u003cstrong\u003eall nutrient regimes\u003c\/strong\u003e, according to the manufacturer.\u003c\/li\u003e\n\u003cli\u003eSuitable as a supplementary \u003cstrong\u003ebloom booster\u003c\/strong\u003e alongside existing base fertilisers.\u003c\/li\u003e\n\u003cli\u003eHighly concentrated formula offering excellent coverage from a small amount of product.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100ml treats up to 500 litres\u003c\/strong\u003e of nutrient solution at the minimum dosage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250ml treats up to 1,250 litres\u003c\/strong\u003e at the minimum dosage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1L treats up to 5,000 litres\u003c\/strong\u003e at the minimum dosage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5L treats up to 25,000 litres\u003c\/strong\u003e at the minimum dosage.\u003c\/li\u003e\n\u003cli\u003eAvailable in \u003cstrong\u003e100ml, 250ml, 1L and 5L\u003c\/strong\u003e sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the UK\u003c\/strong\u003e for growers seeking concentrated flowering-stage nutrition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGrenade Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOrgano-mineral flowering additive \/ bloom booster\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFormulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConcentrated liquid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSupporting flower development, density and harvest performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFormulation Components\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMinerals, amino acids, phytohormones and biological inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGuaranteed NPK Analysis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-9-18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNitrogen (N)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhosphorus (P)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePotassium (K)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Dosage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2–0.4ml per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDosage per 10 Litres\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2–4ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDosage per 100 Litres\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20–40ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Growth Stage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlowering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication Period\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlowering weeks 3–7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeeks 6–7 Dosage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 0.4ml per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNutrient Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCompatible with all nutrient regimes, according to the manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e100ml Bottle Coverage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250–500 litres, depending on dosage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e250ml Bottle Coverage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e625–1,250 litres, depending on dosage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1L Bottle Coverage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2,500–5,000 litres, depending on dosage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5L Bottle Coverage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12,500–25,000 litres, depending on dosage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100ml, 250ml, 1L and 5L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5–30°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Conditions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStore in a cool, dry place\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Manufacture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho It’s For\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrenade Black\u003c\/strong\u003e is designed for growers seeking a concentrated \u003cstrong\u003eflowering booster\u003c\/strong\u003e to support denser flower development and improve overall harvest performance. It is particularly suited to cultivators who want to supplement their regular feeding programme with additional \u003cstrong\u003ephosphorus, potassium and biological inputs\u003c\/strong\u003e during the middle and later stages of flowering.\u003c\/p\u003e\n\n\u003cp\u003eGrowers using established nutrient programmes can incorporate Grenade Black as a supplementary \u003cstrong\u003ePK flowering additive\u003c\/strong\u003e, following the manufacturer's recommended dosage. Its concentrated formula is useful for both smaller growing setups and larger professional horticultural operations where economical nutrient dosing is important.\u003c\/p\u003e\n\n\u003cp\u003eGrenade Black is also suitable for growers looking for an \u003cstrong\u003eorgano-mineral alternative to conventional chemical flower hardeners\u003c\/strong\u003e, with a formulation designed to support the natural development of their crops.\u003c\/p\u003e\n\n\u003ch3\u003eHow To Use\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eApplication Timing:\u003c\/strong\u003e Use \u003cstrong\u003eGrenade Black\u003c\/strong\u003e during \u003cstrong\u003eweeks 3–7 of the flowering cycle\u003c\/strong\u003e, alongside your existing nutrient feeding programme.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDosage:\u003c\/strong\u003e Add \u003cstrong\u003e0.2–0.4ml per litre\u003c\/strong\u003e of water or nutrient solution, following the manufacturer's recommended application range.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFlowering Weeks 6–7:\u003c\/strong\u003e The manufacturer recommends using the upper application rate of \u003cstrong\u003e0.4ml per litre\u003c\/strong\u003e during weeks 6 and 7 to support natural flower density.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMixing Guide:\u003c\/strong\u003e For a 10-litre nutrient solution, use \u003cstrong\u003e2–4ml\u003c\/strong\u003e of Grenade Black. For a 100-litre reservoir, use \u003cstrong\u003e20–40ml\u003c\/strong\u003e. Measure accurately to maintain the recommended concentration.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNutrient Programme:\u003c\/strong\u003e Grenade Black is designed to complement existing \u003cstrong\u003ebase nutrients and flowering fertilisers\u003c\/strong\u003e. Add the measured quantity to your feeding solution and mix thoroughly. Avoid mixing concentrated fertilisers directly together before dilution.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMonitoring:\u003c\/strong\u003e Check the final \u003cstrong\u003eEC and pH\u003c\/strong\u003e of your prepared nutrient solution where appropriate for your growing system. Because Grenade Black supplies additional nitrogen, phosphorus and potassium, consider its contribution to the overall nutrient strength of your feeding programme.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAfter Week 7:\u003c\/strong\u003e The manufacturer's specified application period ends at flowering week 7. Follow the feeding schedule appropriate to your crop rather than extending application beyond the recommended period without further guidance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStorage:\u003c\/strong\u003e Keep Grenade Black in a \u003cstrong\u003ecool, dry place between 5°C and 30°C\u003c\/strong\u003e. Close the container securely after use and follow the handling instructions on the product label.\u003c\/p\u003e","brand":"Grenade Nutrients","offers":[{"title":"250ml","offer_id":59588979392844,"sku":"Grenade-Black-250ml","price":70.0,"currency_code":"GBP","in_stock":true},{"title":"1L","offer_id":59588979425612,"sku":"Grenade-Black-1L","price":210.0,"currency_code":"GBP","in_stock":true},{"title":"5L","offer_id":59588979458380,"sku":"Grenade-Black-3","price":840.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0789\/3044\/4620\/files\/grenade-nutrients-black-250ml.jpg?v=1793120458","url":"https:\/\/hytachydroponics.com\/products\/grenade-black-250ml","provider":"Hytec Horticulture","version":"1.0","type":"link"}