{"product_id":"gh-koolbloom-dry-1kg-pk-bloom-booster","title":"GH KoolBloom Dry 1kg | High-PK Bloom Booster \u0026 Ripening Powder (2-45-28)","description":"\u003ch2\u003eUnlock Maximum Flower Density with GH KoolBloom Dry\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eGeneral Hydroponics KoolBloom Dry\u003c\/strong\u003e is the ultimate \u003cstrong\u003elate-stage PK bloom booster and ripening agent\u003c\/strong\u003e trusted by professional growers worldwide. Engineered with a powerful \u003cstrong\u003e2-45-28 NPK ratio\u003c\/strong\u003e, this high-intensity dry powder delivers the precise phosphorus and potassium surge your plants need in the final weeks of flowering — triggering explosive bud swelling, flower hardening, and enhanced terpene and resin production. If you're chasing bigger yields, denser flowers, and premium-quality harvests, KoolBloom Dry is the finishing tool that delivers.\u003c\/p\u003e\u003ch2\u003eWhy GH KoolBloom Dry Outperforms Other Bloom Boosters\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMassive PK Boost (2-45-28):\u003c\/strong\u003e An aggressive phosphorus and potassium spike maximises flower development, final swell, and harvest weight during the critical ripening phase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Flower Hardening:\u003c\/strong\u003e Transforms soft, airy flowers into dense, heavy, rock-hard buds with improved structure and bag appeal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Terpene \u0026amp; Resin Production:\u003c\/strong\u003e Boosts essential oil output for stronger aroma, flavour, and visual resin coverage at harvest.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Ripening Across the Canopy:\u003c\/strong\u003e Ensures even maturity from top to bottom, improving overall harvest consistency and quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly Soluble \u0026amp; System Safe:\u003c\/strong\u003e Dissolves instantly with no residue — safe for DWC, NFT, recirculating hydroponics, coco coir, and soil without clogging lines or drippers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eLate Flowering Performance | Final Swell \u0026amp; Ripening\u003c\/h2\u003e\u003cp\u003eKoolBloom Dry is specifically engineered for the \u003cstrong\u003efinal 2–3 weeks of flowering\u003c\/strong\u003e, where yield and quality are determined. Unlike early-stage bloom nutrients, this formula delivers a targeted PK surge that forces plants to shift all available energy into flower mass, density, and resin production.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal Flower Swell Activation:\u003c\/strong\u003e Triggers rapid expansion of flower mass during the critical final phase of the cycle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBud Hardening Technology:\u003c\/strong\u003e Increases density and structural integrity — eliminating light, airy flowers for a more professional finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResin \u0026amp; Terpene Spike:\u003c\/strong\u003e Enhances secondary metabolite production for stronger aroma, flavour complexity, and higher-quality crop finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEven Canopy Ripening:\u003c\/strong\u003e Balances nutrient delivery to ensure uniform harvest readiness across the entire plant.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGuaranteed Analysis\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrogen (N):\u003c\/strong\u003e 2.0%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhosphate (P₂O₅):\u003c\/strong\u003e 45.0%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotash (K₂O):\u003c\/strong\u003e 28.0%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDerived from:\u003c\/strong\u003e Magnesium Phosphate, Potassium Phosphate, Potassium Sulfate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHow \u0026amp; When to Use\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhen:\u003c\/strong\u003e Final 2–3 weeks of the flowering stage only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDosage:\u003c\/strong\u003e 0.3g–0.6g per litre (approx. ¼–½ tsp per 4L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixing:\u003c\/strong\u003e Dissolve thoroughly into water before adding to reservoir. Use alongside base nutrients — reduce base nutrient strength to prevent overfeeding at high EC levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with:\u003c\/strong\u003e Hydroponics (DWC, NFT, recirculating), coco coir, and soil\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1kg Powder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dry PK Bloom Booster \u0026amp; Ripening Agent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage:\u003c\/strong\u003e Late Flowering \/ Ripening only\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eGH KoolBloom Dry is the professional-grade \u003cstrong\u003ePK bloom booster\u003c\/strong\u003e for Australian growers who demand denser flowers, heavier harvests, and premium-quality results in the final weeks of their grow cycle.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eFrequently Bought Together\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/grotek-monster-bloom-0-50-30-pk-booster-au\"\u003e\u003cstrong\u003eGrotek Monster Bloom\u003c\/strong\u003e\u003c\/a\u003e — an alternative high-PK dry powder booster; compare both to find your preferred PK profile\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/rock-resinator-bud-hardener-resin-booster\"\u003e\u003cstrong\u003eRock Resinator\u003c\/strong\u003e\u003c\/a\u003e — stack with KoolBloom Dry for maximum resin production and bud hardening in the final weeks\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/terra-aquatica-final-part-ripening-booster-au\"\u003e\u003cstrong\u003eTerra Aquatica Final Part\u003c\/strong\u003e\u003c\/a\u003e — follow KoolBloom Dry with Final Part in the last 7–10 days for a complete ripening finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhen do I start using GH KoolBloom Dry 1kg?\u003c\/h3\u003e\n\u003cp\u003eIntroduce GH KoolBloom Dry 1kg at the start of the flowering or fruiting stage — typically when you switch your light cycle to 12\/12 for photoperiod plants or when pre-flowers appear on autoflowers. Early introduction primes the plant for heavy flower production. Some growers start GH KoolBloom Dry 1kg during the final 1–2 weeks of vegetative growth to front-load the transition. Follow the feeding chart for your specific crop.\u003c\/p\u003e\n\u003ch3\u003eCan I use GH KoolBloom Dry 1kg alongside my base nutrient?\u003c\/h3\u003e\n\u003cp\u003eYes — GH KoolBloom Dry 1kg is designed to complement your existing base nutrient. Add your base nutrient first, then add GH KoolBloom Dry 1kg and any other additives. Always check total EC after mixing to ensure you are not overfeeding. If EC is too high, reduce your base nutrient dose proportionally rather than reducing GH KoolBloom Dry 1kg — the booster's specialised chemistry should remain at full dose for best results.\u003c\/p\u003e\n\u003ch3\u003eWill GH KoolBloom Dry 1kg affect my nutrient solution's pH?\u003c\/h3\u003e\n\u003cp\u003eAdding GH KoolBloom Dry 1kg may shift your reservoir pH slightly. Always measure and adjust pH after adding all nutrients and additives. Target pH 5.8–6.2 for hydroponics and coco, 6.0–6.5 for soil. Use a calibrated pH meter and pH Up or pH Down solution to dial in your final reading.\u003c\/p\u003e\n\u003ch3\u003eDoes GH KoolBloom Dry 1kg ship fast within Australia?\u003c\/h3\u003e\n\u003cp\u003eYes — GH KoolBloom Dry 1kg ships from our Australian warehouse with fast tracked delivery Australia-wide. Most east coast orders arrive within 2–5 business days. WA, NT, and TAS orders typically arrive within 5–12 business days.\u003c\/p\u003e","brand":"General Hydroponics","offers":[{"title":"Default Title","offer_id":43142513688639,"sku":null,"price":149.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/6898\/8479\/files\/Koolbloom1kg.webp?v=1776488624","url":"https:\/\/apexgrow.com.au\/products\/gh-koolbloom-dry-1kg-pk-bloom-booster","provider":"Apex Grow","version":"1.0","type":"link"}