{"product_id":"gt-silica","title":"GT Silica | Potassium Silicate for Stronger Plants \u0026 Better Yields | 250ml, 1L, 5.5L, 20L","description":"\u003ch2\u003eBuild Plants That Are Harder to Kill and Easier to Grow\u003c\/h2\u003e\u003cp\u003eGT Silica is a concentrated potassium silicate solution that adds silicon to your hydroponic nutrient programme — the one beneficial element that’s almost always missing from hydroponic systems but present in virtually every natural soil. Plants deposit silicon directly into their cell walls, creating a physical barrier that makes them stronger, more resilient, and significantly harder for pests, fungi, and environmental stress to damage.\u003c\/p\u003e\u003ch2\u003eWhat Silicon Actually Does Inside Your Plant\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e🌱 \u003cstrong\u003eStrengthens cell walls\u003c\/strong\u003e — silicon deposits in plant tissue create a physical barrier against fungal infection (especially powdery mildew), insect attack, and mite damage\u003c\/li\u003e\n\u003cli\u003e🌱 \u003cstrong\u003eIncreases heat and drought tolerance\u003c\/strong\u003e — stronger, more rigid cell walls reduce water loss and improve stress tolerance in high-temperature environments\u003c\/li\u003e\n\u003cli\u003e🌱 \u003cstrong\u003eBoosts chlorophyll production\u003c\/strong\u003e — more chlorophyll means better photosynthesis and more efficient use of your grow lights\u003c\/li\u003e\n\u003cli\u003e🌱 \u003cstrong\u003eImproves nutrient uptake and transport\u003c\/strong\u003e — silicon enhances the movement of minerals through plant tissue for more efficient feeding\u003c\/li\u003e\n\u003cli\u003e🌱 \u003cstrong\u003eIncreases CO₂ uptake\u003c\/strong\u003e — supports more efficient gas exchange for faster, more vigorous growth\u003c\/li\u003e\n\u003cli\u003e🌱 \u003cstrong\u003eWorks through all growth stages\u003c\/strong\u003e — beneficial from early veg right through to late bloom\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHow to Use GT Silica\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003e⚠️ Critical: Always pre-dilute GT Silica in a separate container of fresh water before adding to your nutrient solution. Never add directly to concentrated nutrients — it will precipitate and become unavailable to your plants.\u003c\/strong\u003e\u003c\/p\u003e\u003col\u003e\n\u003cli\u003ePre-dilute GT Silica in a separate container of fresh water first\u003c\/li\u003e\n\u003cli\u003eAdd the diluted silica to your nutrient solution slowly\u003c\/li\u003e\n\u003cli\u003eMix thoroughly and allow to stand for \u003cstrong\u003e15 minutes\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCheck and adjust pH to between \u003cstrong\u003e5.5 and 6.5\u003c\/strong\u003e — silicates are highly alkaline and will raise pH significantly\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003eDose rate:\u003c\/strong\u003e 1ml per litre = 20ppm silicon (standard Dutch recommendation). Full strength: up to 5ml per litre.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRecirculating systems:\u003c\/strong\u003e Add GT Silica to the tank once per week.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRun-to-waste systems:\u003c\/strong\u003e Add when preparing each fresh nutrient solution.\u003c\/p\u003e\u003ch2\u003eSafety — Read Before Use\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e🛡️ \u003cstrong\u003eAlways wear gloves and eye protection\u003c\/strong\u003e — GT Silica is highly alkaline and will irritate skin and eyes\u003c\/li\u003e\n\u003cli\u003eDilute before adding to tank — never add undiluted\u003c\/li\u003e\n\u003cli\u003eStore in a locked cupboard, away from children\u003c\/li\u003e\n\u003cli\u003eSafety data sheets available on request\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eChoose the Right Size\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e250ml\u003c\/strong\u003e — ideal for home growers and small systems trying silica for the first time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1L\u003c\/strong\u003e — great for regular growers running ongoing cycles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5.5L\u003c\/strong\u003e — best value for serious hobby growers and medium commercial operations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20L\u003c\/strong\u003e — bulk supply for large-scale grows and commercial facilities\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e Pair GT Silica with \u003cstrong\u003eGT Fulvic\u003c\/strong\u003e for enhanced nutrient uptake, and \u003cstrong\u003eGT Super\u003c\/strong\u003e during bloom for maximum plant performance.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eBy Growth Technology — trusted by Australian hydroponic growers for decades.\u003c\/em\u003e\u003c\/p\u003e","brand":"Growth Technology","offers":[{"title":"250ml","offer_id":48212173127894,"sku":null,"price":15.0,"currency_code":"AUD","in_stock":true},{"title":"1L","offer_id":48212173160662,"sku":null,"price":18.0,"currency_code":"AUD","in_stock":true},{"title":"5.5L","offer_id":48212173193430,"sku":null,"price":45.0,"currency_code":"AUD","in_stock":true},{"title":"20L","offer_id":48212173226198,"sku":null,"price":125.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/6097\/9158\/files\/GTSILICA1.jpg?v=1778212022","url":"https:\/\/growersdepot.com.au\/products\/gt-silica","provider":"Growers Depot","version":"1.0","type":"link"}