{"product_id":"essentials-lab-ph-down-30","title":"Essentials LAB pH Down 30% – Phosphoric Acid for Hydroponics","description":"\u003ch2\u003eConcentrated pH Down for tanks of any size\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eEssentials LAB pH Down 30%\u003c\/strong\u003e is a \u003cstrong\u003e30% phosphoric acid\u003c\/strong\u003e solution for lowering the pH of nutrient solutions in \u003cstrong\u003ehydroponics, coco and soil\u003c\/strong\u003e feeding. It is concentrated enough to bring down \u003cstrong\u003elarge volumes of nutrient solution\u003c\/strong\u003e with small, controlled doses, yet at 30% it sits below the concentration threshold for regulated substances under the Control of Poisons and Explosives Precursors Regulations 2023. Essentials LAB is the lab-grade range from HydroGarden, the makers of VitaLink.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e30% phosphoric acid\u003c\/strong\u003e - strong enough for big reservoirs, gentle enough to dose accurately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks with any nutrient\u003c\/strong\u003e in hydro, coco or soil feeding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEconomical\u003c\/strong\u003e - a few millilitres corrects a whole tank of solution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelow the regulated-substance threshold\u003c\/strong\u003e for 2023 precursor rules\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with the Essentials pH Meter\u003c\/strong\u003e and Essentials LAB buffer solutions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy does pH matter so much?\u003c\/h3\u003e\n\u003cp\u003eMost nutrients are only available to roots within a narrow pH window. UK tap water and many base feeds leave the solution too alkaline, and above that window iron, manganese and phosphorus lock out - showing up as \u003cstrong\u003eyellowing new growth, slow growth and poor nutrient uptake\u003c\/strong\u003e even when the feed is right. Bringing the tank back into range with a measured dose of pH Down puts those nutrients back within reach.\u003c\/p\u003e\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMix your nutrients first\u003c\/strong\u003e, then check the pH with a calibrated pH meter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdd a small, measured amount\u003c\/strong\u003e of pH Down to the reservoir and stir thoroughly - it is concentrated, so start low.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRe-test and repeat\u003c\/strong\u003e in small steps until you reach your target (typically pH 5.5-6.2 for hydro and coco, 6.0-6.5 for soil).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNever add it neat to concentrated nutrient\u003c\/strong\u003e, and wear gloves and eye protection when handling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive ingredient:\u003c\/strong\u003e 30% phosphoric acid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct pH:\u003c\/strong\u003e below 1.0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e lowers the pH of nutrient solutions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e hydroponics, coco and soil feeding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegulation:\u003c\/strong\u003e below the regulated-substance threshold of the Control of Poisons and Explosives Precursors Regulations 2023\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Essentials LAB, a HydroGarden brand, UK\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Essentials","offers":[{"title":"5L","offer_id":53803798462730,"sku":"NUT-ESS-004-01","price":39.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/essentials-lab-ph-down-30-5l-1.jpg?v=1790229475","url":"https:\/\/hydrocropshop.co.uk\/products\/essentials-lab-ph-down-30","provider":"Hydro Crop Shop","version":"1.0","type":"link"}