{"product_id":"growth-technology-ph-down","title":"Growth Technology - pH Down","description":"\u003csection class=\"gh-product-listing\"\u003e\n\n\u003ch2\u003eGrowth Technology pH Down - Concentrated Phosphoric Acid for Nutrient Solutions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e hydro, coco and soil growers who need a reliable way to bring nutrient solution pH back down into the correct feeding range.\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\npH Down isn't exciting, but it's one of those bottles every grower ends up needing sooner or later. Growth Technology's version is a straightforward concentrated acid that does the job in small doses - keep it away from skin and eyes, measure carefully, and it'll keep your feed where it needs to be.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eGrowth Technology pH Down is a concentrated phosphoric acid solution (around 81% strength) used to lower the pH of nutrient solution in hydroponic, coco and soil-based growing. Most plants prefer a feed pH in the region of 5.5 to 6.5, and pH naturally drifts over time as nutrients are taken up and water evaporates, so growers need a way to correct it back into range.\u003c\/p\u003e\n\n\u003cp\u003eBecause it's a high-strength concentrate, only a small amount is needed per litre of solution - a few drops at a time, testing with a pH meter or drops kit after each addition, rather than dosing by eye.\u003c\/p\u003e\n\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003epH Down concentrates are a standard item across nutrient brands, with the acid strength and dosing precision being the main differences.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompared with General Hydroponics pH Down, which uses a similar phosphoric acid base, Growth Technology's version is comparably concentrated and dosed in the same small-increment way.\u003c\/li\u003e\n\u003cli\u003eCompared with Canna pH-, which is also phosphoric-acid based, the practical difference for most growers comes down to bottle size and price rather than how the product works.\u003c\/li\u003e\n\u003cli\u003eCompared with using vinegar or other DIY acids, a purpose-made pH Down gives consistent, predictable strength every time you dose, rather than variable acidity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt's a commodity product at heart - the value is in getting a consistent, correctly-labelled concentrate at a fair price rather than any special formulation.\u003c\/p\u003e\n\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003eAlways add acid to water, never the other way round, and dose gradually.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDosing\u003c\/strong\u003e\u003cbr\u003eAdd a few drops at a time to your mixed nutrient solution, stirring and re-testing pH after each addition until you reach the target range of roughly 5.5-6.5.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHandling\u003c\/strong\u003e\u003cbr\u003eWear gloves and eye protection when handling - this is a concentrated acid and should be treated with the same care as any strong chemical. Rinse immediately with clean water on skin or eye contact.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003cbr\u003eKeep the bottle sealed, upright and out of reach of children and pets, away from direct sunlight.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eActive ingredient: \u003cstrong\u003ephosphoric acid, approx. 81%\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFunction: \u003cstrong\u003elowers nutrient solution pH\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSizes available: \u003cstrong\u003e250ml, 1L and 5L bottles\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eGrowth Technology\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible systems: \u003cstrong\u003ehydroponics, coco coir, soil\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTarget feed pH range: \u003cstrong\u003eapprox. 5.5-6.5 (varies by plant\/media)\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\u003eAny grower running a hydro, coco or soil system who needs to manage feed pH\u003c\/li\u003e\n\u003cli\u003eNew growers setting up their first pH testing and correction routine\u003c\/li\u003e\n\u003cli\u003eGrowers topping up an existing pH Up\/Down kit\u003c\/li\u003e\n\u003cli\u003eAnyone who wants a straightforward, no-frills acid rather than a premium branded alternative\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003epH management is one of the basics that actually matters - get it wrong and nutrients stop being available to the plant no matter how good your feed is. This is a simple, reliable way to keep it in check.\u003c\/p\u003e\n\u003cp\u003eDoes exactly what it should, day in, day out - a sensible pickup alongside a pH meter or drops kit for anyone starting out.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"GROWTH TECHNOLOGY","offers":[{"title":"250ml","offer_id":42567606206634,"sku":null,"price":5.99,"currency_code":"GBP","in_stock":true},{"title":"1L","offer_id":42567606239402,"sku":null,"price":14.99,"currency_code":"GBP","in_stock":true},{"title":"5L","offer_id":42567606272170,"sku":null,"price":44.99,"currency_code":"GBP","in_stock":false},{"title":"250mls","offer_id":47916141936810,"sku":"811911","price":5.99,"currency_code":"GBP","in_stock":true},{"title":"1 Litre","offer_id":47916141969578,"sku":"88733","price":14.99,"currency_code":"GBP","in_stock":true},{"title":"5 Litre","offer_id":47916142002346,"sku":"88734","price":54.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/ph_downgroup_image.jpg?v=1769188370","url":"https:\/\/growershouse.co.uk\/products\/growth-technology-ph-down","provider":"Growers House ","version":"1.0","type":"link"}