{"title":"pH Adjusters \u0026 Water Treatment","description":"\u003cp\u003epH up and pH down, flushes and water treatment for nutrient solutions.\u003c\/p\u003e","products":[{"product_id":"general-hydroponics-pro-ph-up-professional-ph-adjuster","title":"General Hydroponics PRO pH Up - Professional Non-Mineral pH Adjuster (Base) - 2.5 Gallon and 6 Gallon - Pickup in Store Only","description":"\u003cp\u003eGeneral Hydroponics PRO pH Up is a professional-strength, non-mineral pH adjuster used to raise the pH of irrigation water and nutrient solutions. It is roughly 3x as concentrated as GH's retail pH Up and, unlike potassium hydroxide adjusters, it does not add potassium or any other fertilizer nutrient to the reservoir. Sold in commercial 2.5 and 6 gallon jugs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDoes not contribute fertilizer, so it will not interfere with your nutrient balances\u003c\/li\u003e\n\u003cli\u003eNon-corrosive, non-caustic formula (label: HMIS 0-0-0, triple zero)\u003c\/li\u003e\n\u003cli\u003eConcentrated formula: nearly 3x the strength of GH's retail pH Up\u003c\/li\u003e\n\u003cli\u003eAlternative to harsh mineral hydroxides (potassium hydroxide) with no extra potassium added\u003c\/li\u003e\n\u003cli\u003eNot HAZMAT listed, per the manufacturer\u003c\/li\u003e\n\u003cli\u003eWorks in rockwool, coco, peat\/lite mixes, in-ground soil and water culture, indoors or out\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to Use\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDirections on label: the volume needed to achieve your desired pH will vary depending on your source water and the products you use in it to make up your solution. Apply very small amounts to the solution you wish to increase the pH of and mix well to allow the pH reading to stabilize before adding more. Repeat until your target value is reached. For recirculating systems, check the pH daily. Recommended pH for most plants is 5.5-6.5. Keep out of reach of children; store in a cool, dark place.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComposition:\u003c\/strong\u003e non-mineral formula; the label lists hydroxylated water and no fertilizer nutrients\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 2.5 gallons (9.46 L) and 6 gallons (22.7 L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade by:\u003c\/strong\u003e General Hydroponics\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"sku-info\"\u003e\u003cstrong\u003eModel # \/ SKU:\u003c\/strong\u003e\u003cbr\u003e2.5 Gallon: hgc722004\u003cbr\u003e6 Gallon: GPUP6\u003c\/p\u003e","brand":"General Hydroponics","offers":[{"title":"2.5 Gallon","offer_id":47513077776575,"sku":"hgc722004","price":67.95,"currency_code":"USD","in_stock":true},{"title":"6 Gallon","offer_id":47513077809343,"sku":"GPUP6","price":170.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/9334\/4191\/files\/gh-9597620715711-800.jpg?v=1791162994"},{"product_id":"general-hydroponics-pro-ph-down-professional-ph-adjuster-6-gallon","title":"General Hydroponics PRO pH Down - Professional Non-Mineral pH Adjuster (Acid) - 6 Gallon - Pickup in Store Only","description":"\u003cp\u003eGeneral Hydroponics PRO pH Down is a professional-strength, non-mineral pH adjuster that lowers the pH of irrigation water and nutrient solutions. It is nearly 3x as concentrated as GH's retail pH Down and, unlike phosphoric acid products, adds no phosphorus, nitrogen or sulfate to your reservoir. Supplied in a 6 gallon (22.7 L) commercial jug.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDoes not contribute fertilizer, so it will not interfere with your nutrient balances\u003c\/li\u003e\n\u003cli\u003eNon-corrosive formula (label: HMIS 0-0-0, triple zero)\u003c\/li\u003e\n\u003cli\u003eConcentrated formula: nearly 3x the strength of GH's retail pH Down\u003c\/li\u003e\n\u003cli\u003eAlternative to harsh mineral acids with no added phosphorus, nitrogen or sulfate\u003c\/li\u003e\n\u003cli\u003eNot HAZMAT listed, per the manufacturer\u003c\/li\u003e\n\u003cli\u003eWorks in rockwool, coco, peat\/lite mixes, in-ground soil and water culture, indoors or out\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to Use\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDirections on label: the volume needed to achieve your desired pH will vary depending on your source water and the products you use in it to make up your solution. Apply very small amounts to the solution you wish to decrease the pH of and mix well to allow the pH reading to stabilize before adding more. Repeat until your target value is reached. For recirculating systems, check the pH daily. Recommended pH for most plants is 5.5-6.5. Keep out of reach of children; store in a cool, dark place.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComposition:\u003c\/strong\u003e non-mineral formula; the label lists hydrogenated water and no fertilizer nutrients\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 6 gallons (22.7 L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade by:\u003c\/strong\u003e General Hydroponics\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"sku-info\"\u003e\u003cstrong\u003eModel # \/ SKU:\u003c\/strong\u003e hgc722002\u003c\/p\u003e","brand":"General Hydroponics","offers":[{"title":"6 Gallon","offer_id":47513077874879,"sku":"hgc722002","price":221.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/9334\/4191\/files\/gh-9597620781247-800.jpg?v=1791162994"},{"product_id":"general-hydroponics-ph-down-liquid-phosphoric-acid-1-quart","title":"General Hydroponics pH Down Liquid - Phosphoric Acid pH Adjuster for Hydroponic Nutrient Solutions - 1 Quart and 1 Gallon - Pickup in Store Only","description":"\u003cp\u003eGeneral Hydroponics pH Down is a liquid acid pH adjuster formulated with food-grade phosphoric acid to lower the pH of hydroponic nutrient solutions and irrigation water. The premium-buffered formula gives stable, predictable pH control; add a little at a time until you reach your target. Ideal for any GH nutrient program that targets pH 5.5-6.5.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFood-grade phosphoric acid formulation lowers nutrient solution pH\u003c\/li\u003e\n\u003cli\u003ePremium buffering for pH stability\u003c\/li\u003e\n\u003cli\u003eReliable pH control for hydroponic and liquid-feed systems\u003c\/li\u003e\n\u003cli\u003eWorks alongside GH nutrient programs targeting pH 5.5-6.5\u003c\/li\u003e\n\u003cli\u003eUseful with high-alkalinity water or pH-unstable media such as rockwool and gravel\u003c\/li\u003e\n\u003cli\u003eCorrosive acid: wear eye and skin protection; keep out of reach of children\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to Use\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMix nutrients into fresh water first, then add pH Down a little at a time. Stir, re-test, and repeat until the target pH is reached (recommended pH for most crops is 5.5-6.5). Do not pH-adjust concentrates. Use a pH test indicator or a calibrated meter to verify. The amount needed varies with water quality, reservoir volume and nutrient recipe. Store upright, tightly sealed, in a cool dry place.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComposition:\u003c\/strong\u003e phosphoric acid, about 15% by weight (per the manufacturer's safety data sheet)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1 quart (946 mL)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade by:\u003c\/strong\u003e General Hydroponics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e corrosive acid; wear eye and skin protection and keep out of reach of children\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"sku-info\"\u003e\u003cstrong\u003eModel # \/ SKU:\u003c\/strong\u003e HGC722120\u003c\/p\u003e","brand":"General Hydroponics","offers":[{"title":"1 Quart","offer_id":47513077940415,"sku":"HGC722120","price":7.95,"currency_code":"USD","in_stock":true},{"title":"1 Gallon","offer_id":67647282249919,"sku":"722125","price":30.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/9334\/4191\/files\/gh-9597620814015-800.jpg?v=1791162807"},{"product_id":"general-hydroponics-florakleen-clearing-solution","title":"General Hydroponics FloraKleen Clearing Solution - Salt and Residue Flush for Hydroponic Systems and Growing Media - 1 Gallon and 6 Gallon","description":"\u003cp\u003eFloraKleen is GH's clearing solution that dissolves accumulated fertilizer salts and residue in hydroponic systems, growing media and potting soil. Use it monthly for maintenance, between reservoir changes, or as a final flush before harvest.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDissolves accumulated fertilizer salts and reduces imbalanced fertilizer residue\u003c\/li\u003e\n\u003cli\u003eSafe for hydroponic systems and media while plants are growing\u003c\/li\u003e\n\u003cli\u003eUse monthly, mid-cycle, or as a final flush one week before harvest\u003c\/li\u003e\n\u003cli\u003eFor hydro, coco, soilless mixes and potting soil\u003c\/li\u003e\n\u003cli\u003eRun alone: do not add base nutrients to a FloraKleen flush\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to Use\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLabel directions: in hydroponic systems between nutrient changes, mix 1-2 tsp per gallon of water and recirculate 1-2 hours, then drain and refill with fresh nutrient. Final flush before harvest: refill with fresh water plus 2 tsp per gallon and run the last day or two. Potting soil and soilless mixes: add 1-2 tsp to a watering can of fresh water and drench to runoff, then resume regular feeding.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGuaranteed analysis:\u003c\/strong\u003e None: FloraKleen is a clearing solution, not a fertilizer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 1 Gallon and 6 Gallon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade by:\u003c\/strong\u003e General Hydroponics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e the 6 gallon jug is a commercial-size container\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"sku-info\"\u003e\u003cstrong\u003eModel # \/ SKU:\u003c\/strong\u003e\u003cbr\u003e1 Gallon: HGC732920\u003cbr\u003e6 Gallon: GFK6\u003c\/p\u003e","brand":"General Hydroponics","offers":[{"title":"1 Gallon","offer_id":47513087246527,"sku":"HGC732920","price":15.95,"currency_code":"USD","in_stock":true},{"title":"6 Gallon","offer_id":47513087279295,"sku":"GFK6","price":75.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/9334\/4191\/files\/gh-9597629956287-800.jpg?v=1791162808"},{"product_id":"athena-blended-balance","title":"Athena Blended Balance - Potassium Silicate pH Adjuster and RO Water Buffer - 1 Gallon and 5 Gallon - Pickup in Store Only","description":"\u003cp\u003eAthena Blended Balance raises the pH of your fertilizer solution and helps buffer reverse osmosis (RO) water so your nutrient mix stays more stable. It is made from fully soluble potassium silicate.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUsed to increase fertilizer solution pH\u003c\/li\u003e\n\u003cli\u003eHelps buffer reverse osmosis (RO) water for a more stable fertilizer solution\u003c\/li\u003e\n\u003cli\u003eMade from fully soluble potassium silicate, so no separate potassium silicate product is needed with Blended Balance\u003c\/li\u003e\n\u003cli\u003ePart of the Athena Blended Line\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to Use\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAdd Balance to your mixed nutrient solution according to the Athena Blended feed schedule and check pH before use. Wear eye protection and gloves when handling concentrates.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 1 gallon and 5 gallon jugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e liquid concentrate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e in-store pickup only, not shipped\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold:\u003c\/strong\u003e each\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"sku-info\"\u003e\u003cstrong\u003eModel # \/ SKU:\u003c\/strong\u003e LQ-SIL-1G, LQ-SIL-5Gb\u003c\/p\u003e","brand":"Athena","offers":[{"title":"1 Gallon","offer_id":47515021770943,"sku":"LQ-SIL-1G","price":25.71,"currency_code":"USD","in_stock":true},{"title":"5 Gallon","offer_id":47515021803711,"sku":"LQ-SIL-5Gb","price":140.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/9334\/4191\/files\/athena-blended-balance-800.jpg?v=1791213729"},{"product_id":"athena-blended-cleanse","title":"Athena Blended Cleanse - Water Conditioner to Prevent Mineral Scale in Irrigation Lines - 1 Gallon and 5 Gallon - Pickup in Store Only","description":"\u003cp\u003eAthena Blended Cleanse is a water conditioner that keeps your irrigation system cleaner and running efficiently for longer. 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Wear eye protection and gloves when handling concentrate.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 1 gallon and 5 gallon jugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e liquid concentrate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e in-store pickup only, not shipped\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine:\u003c\/strong\u003e Athena Blended\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold:\u003c\/strong\u003e each\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"sku-info\"\u003e\u003cstrong\u003eModel # \/ SKU:\u003c\/strong\u003e LQ-CL-1G, LQ-CL-5G\u003c\/p\u003e","brand":"Athena","offers":[{"title":"1 Gallon","offer_id":47515021869247,"sku":"LQ-CL-1G","price":49.0,"currency_code":"USD","in_stock":true},{"title":"5 Gallon","offer_id":47515021902015,"sku":"LQ-CL-5G","price":210.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/9334\/4191\/files\/ath-cleanse.jpg?v=1789948454"},{"product_id":"athena-pro-balance","title":"Athena Pro Balance - Potassium Carbonate pH Adjuster and RO Water Buffer - 10 lb and 25 lb Box - Pickup in Store Only","description":"\u003cp\u003eAthena Pro Balance raises the pH of your fertilizer solution and helps buffer reverse osmosis (RO) water. 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The pH test indicator reads from pH 4.0 to 8.5; then pH Up or pH Down brings the solution back into range. Most crops do best at about pH 5.5 to 6.5.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIncludes 8 oz pH Up, 8 oz pH Down, 1 oz pH Test Indicator and a test vial\u003c\/li\u003e\n\u003cli\u003eTest: add 3 drops of indicator to a vial filled halfway and compare to the color chart\u003c\/li\u003e\n\u003cli\u003eAdjust only after nutrients are fully mixed in fresh water; stir and re-test\u003c\/li\u003e\n\u003cli\u003eNever mix undiluted pH Up and pH Down\u003c\/li\u003e\n\u003cli\u003eNo batteries or calibration needed\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePickup in store only\u003c\/strong\u003e because the kit contains corrosive liquids.\u003c\/p\u003e","brand":"General Hydroponics","offers":[{"title":"4 piece kit","offer_id":67607479353535,"sku":"GH1514","price":15.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/9334\/4191\/files\/sq_kit.jpg?v=1791490350"},{"product_id":"urban-farm-ph-down-25-phosphoric-acid-ph-adjuster-1-gallon-pickup-in-store-only","title":"Urban Farm pH Down - 25% Phosphoric Acid pH Adjuster - 1 Gallon - Pickup in Store Only","description":"\u003cp\u003eUrban Farm pH Down is a 25% phosphoric acid (H3PO4) solution used to lower the pH of nutrient solutions and irrigation water in hydroponic and soil gardens. This item is available for in-store pickup only.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e25% phosphoric acid (H3PO4) liquid\u003c\/li\u003e\n\u003cli\u003eLowers the pH of nutrient solutions and irrigation water\u003c\/li\u003e\n\u003cli\u003eIn-store pickup only (corrosive liquid; not shipped)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSize: 1 gallon\u003c\/li\u003e\n\u003cli\u003eForm: liquid\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"sku-info\"\u003e\u003cstrong\u003eModel # \/ SKU:\u003c\/strong\u003e 7516DS\u003c\/p\u003e","brand":"Urban Farm","offers":[{"title":"1 Gallon","offer_id":67647282020543,"sku":"7516DS","price":20.0,"currency_code":"USD","in_stock":true}]}],"url":"https:\/\/www.dsgardensupplies.com\/collections\/ph-adjusters-water-treatment.oembed","provider":"DS Garden Supplies","version":"1.0","type":"link"}