{"product_id":"emerald-harvest-ph-down","title":"Emerald Harvest pH Down Premium pH Acidifier","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEmerald Harvest pH Down is a concentrated phosphoric acid solution formulated to lower the pH of alkaline hydroponic nutrient solutions. Used carefully after fertilizers and supplements have been mixed, it helps bring the completed solution into the target range required for balanced nutrient availability and efficient root uptake.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eMaintaining an appropriate pH helps keep essential elements such as iron, manganese, phosphorus and calcium available to plants. Emerald Harvest recommends targeting a final hydroponic nutrient-solution pH between 5.8 and 6.3.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLowers excessive pH:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Corrects nutrient solutions that test above the desired range.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eConcentrated formulation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Requires only small, incremental additions.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eImproves nutrient availability:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Helps prevent pH-related nutrient lockout.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSupports micronutrient solubility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Proper pH helps keep elements such as iron and manganese available.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHydroponic precision:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Allows growers to fine-tune reservoir conditions before feeding.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSource-water correction:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Useful when alkaline water raises the final nutrient-solution pH.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMedia flexibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Helps compensate for pH changes associated with rockwool, coco coir and other growing media.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOutside-product compatibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Useful when supplements from different nutrient programs alter the final pH.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eFormulation and Product Information\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eProduct type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Premium hydroponic pH acidifier\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePrimary active ingredient:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Phosphoric acid\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePhosphoric acid concentration:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 40–45%\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAppearance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Clear, odorless liquid\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eConcentrate pH:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 2\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWater solubility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Fully soluble\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eRecommended use:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Lowering the pH of hydroponic nutrient solutions\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEmerald Harvest pH Down is not a fertilizer and should not be applied to plants in its concentrated form.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhy Nutrient-Solution pH Matters\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePlants absorb different nutrients most efficiently within different pH ranges. A slightly acidic hydroponic solution provides a practical compromise that keeps the complete group of essential nutrients available.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhen pH rises too high:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eIron and manganese may become less available.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePhosphorus can react with other minerals and become difficult for roots to absorb.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePlants may display deficiency symptoms even when nutrients are present.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFertilizer efficiency can decline.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRoot-zone biological activity may become less stable.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCorrecting the pH helps restore nutrient availability, but it does not correct deficiencies caused by excessive EC, poor irrigation, unhealthy roots or an improperly balanced fertilizer program.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eRecommended pH Range\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEmerald Harvest identifies \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003epH 5.8–6.3\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e as the preferred sweet spot for hydroponic nutrient solutions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA broader range of approximately 5.5–6.5 may be acceptable for some crops and growing methods. Always follow the requirements of the specific plant, growing medium and fertilizer program.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eMeasure the final nutrient solution rather than relying on the pH of the source water alone.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhen pH Down May Be Needed\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEmerald Harvest base nutrients and core supplements are formulated to work together within an appropriate pH range. Additional adjustment may not be necessary when the complete program is used correctly.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003epH Down may be helpful when:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSource water has high alkalinity.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe completed nutrient solution tests above the target range.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOutside supplements alter the final pH.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePotassium silicate products such as Sturdy Stalk raise solution pH.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRockwool, coco coir or another growing medium affects root-zone conditions.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReservoir pH gradually rises between changes.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA competing base nutrient program requires manual adjustment.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOnly use pH Down after testing confirms that the solution is too alkaline.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCorrect Application Method\u003c\/span\u003e\u003c\/h3\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\u003cspan\u003eFill the reservoir or watering container with fresh water.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdd all base nutrients in their required mixing order.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdd compatible supplements individually, mixing between additions.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAllow the completed nutrient solution to circulate or mix thoroughly.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMeasure the final EC or PPM and pH.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIf the pH is above the desired range, add a very small amount of pH Down to the water.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMix or circulate the solution thoroughly.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAllow the reading to stabilize and test again.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRepeat with another small addition only when necessary.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStop once the solution reaches the appropriate range.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThere is no universal application rate because the amount required depends on source-water alkalinity, reservoir volume, fertilizers, supplements and growing media.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eImportant Mixing Rules\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAlways add pH Down to water or a prepared nutrient solution.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNever pour water into concentrated pH Down.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNever apply the concentrate directly to roots or growing media.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNever combine concentrated pH Down with concentrated fertilizers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNever mix concentrated pH Down and pH Up together.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMix thoroughly and retest after every small addition.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAvoid repeatedly chasing pH up and down with opposing products.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIf the target is significantly overshot, diluting or replacing part of the nutrient solution may be safer and more stable than repeatedly alternating between pH Up and pH Down.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eSafety and Personal Protection\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEmerald Harvest pH Down is classified as a corrosive product. Always read the current container label and Safety Data Sheet before handling.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eWear chemical-resistant gloves.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWear chemical safety goggles or suitable eye protection.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUse protective clothing when splashing is possible.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWork in a well-ventilated area.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDo not breathe mist or spray.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAvoid contact with skin, eyes and clothing.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWash thoroughly after handling.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eKeep an accessible source of clean rinse water nearby.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eKeep away from children, pets and unauthorized users.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe concentrate may also be corrosive to certain metals. Use compatible measuring tools and containers.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eFirst-Aid Information\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEye Contact:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Rinse cautiously with clean water for at least 20 minutes. Remove contact lenses when easily possible and seek immediate medical attention.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSkin Contact:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Remove contaminated clothing and rinse the affected area with water for at least 20 minutes. Seek immediate medical attention.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eInhalation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Move to fresh air and obtain immediate medical attention.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSwallowed:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Rinse the mouth. Do not induce vomiting. Contact a poison center or doctor immediately.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAlways follow the current product label and Safety Data Sheet for complete emergency instructions.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eStorage and Handling\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eKeep only in the original, clearly labeled container.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStore tightly closed and locked away from children and unauthorized users.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eKeep in a cool, dry and well-ventilated area.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eProtect from physical damage and leaks.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStore away from bases, strong oxidizers and incompatible metals.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDo not reuse the empty container.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDispose of unused product and containers according to applicable regulations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe manufacturer lists a shelf life of three years or more under normal storage conditions.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eImportant Usage Notes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eTest the completed nutrient solution before making an adjustment.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdd only when the measured pH is above the desired range.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMake small additions because the formula is highly concentrated.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAlways mix and retest between additions.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTarget approximately pH 5.8–6.3 for the standard Emerald Harvest hydroponic program.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNever apply the concentrate directly to plants.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNever combine pH Down and pH Up concentrates.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWear appropriate gloves, eye protection and protective clothing.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eKeep the original label and safety information with the product.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Emerald Harvest","offers":[{"title":"Qt","offer_id":44303922528420,"sku":"724014","price":17.3,"currency_code":"USD","in_stock":true},{"title":"Gallon","offer_id":44303922593956,"sku":"724016","price":50.87,"currency_code":"USD","in_stock":false},{"title":"2.5 Gallon","offer_id":44303922626724,"sku":"724017","price":109.88,"currency_code":"USD","in_stock":false},{"title":"6 Gallon","offer_id":44303922659492,"sku":"724018","price":222.8,"currency_code":"USD","in_stock":false},{"title":"15 Gallon","offer_id":44813639909540,"sku":"","price":479.5,"currency_code":"USD","in_stock":false},{"title":"55 Gallon","offer_id":44303922692260,"sku":"724019","price":1667.05,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1298\/4199\/products\/Emerald-Harvest_-pH-Down_-qt-Emerald-Harvest-1674013172_55a0c1b5-5de7-4ae3-a411-6e55df734137.jpg?v=1674163530","url":"https:\/\/www.gardensupplyguys.com\/products\/emerald-harvest-ph-down","provider":"GARDEN SUPPLY GUYS","version":"1.0","type":"link"}