{"product_id":"pool-mate-25-pounds-premium-calcium-hardness-increaser-for-pools-100","title":"Pool Mate 25-Pounds Premium Calcium Hardness Increaser for Pools, 100%","description":"\u003cp\u003eIn this review the Pool Mate 25-Pounds Calcium Hardness Increaser is evaluated for pool owners who need a reliable, cost-conscious way to raise and maintain calcium hardness. The bottom line: this dry granular \u003cstrong\u003ecalcium chloride\u003c\/strong\u003e product is best for those who test low on calcium and want a straightforward treatment that dissolves quickly and restores hardness to the recommended range without the premium price of specialty brands. It is presented as an easy-to-use, measurable solution for preventing corrosion, surface etching, and staining when used as directed.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Calcium Chloride:\u003c\/strong\u003e Provides a fast-acting source of calcium to raise total hardness without adding other chemicals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapidly increases hardness:\u003c\/strong\u003e Formulated to dissolve quickly so measured increases in calcium ppm can be achieved in a single treatment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrevents surface damage:\u003c\/strong\u003e Helps prevent corrosion, etching and staining of pool surfaces when calcium is kept in the recommended range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear dosing guidance:\u003c\/strong\u003e 8 ounces raises calcium hardness about 10 ppm per 5,000 gallons, making it easy to calculate required amounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide ideal range coverage:\u003c\/strong\u003e Suitable for vinyl, tile, exposed aggregate, marcite, fiberglass and painted pools with recommended ppm ranges provided.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe product is aimed at residential pool owners, maintenance pros and DIYers who regularly test water chemistry and need to correct low calcium hardness. It is particularly useful for pools where low hardness is causing corrosion or etching, and for those who prefer a granular, concentrated formula that dissolves quickly and is easier on the wallet.\u003c\/p\u003e\n\u003cp\u003eOwners who do not test water regularly or who lack a circulating system to disperse the solution may want a professional service or alternative treatment that offers premixed dosing. This is not a multi-purpose sanitizer or clarifier; it addresses calcium hardness specifically.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEffective at raising calcium hardness to target ranges when dosed correctly.\u003c\/li\u003e\n\u003cli\u003eGood value compared with more expensive brands while maintaining quality and rapid dissolution.\u003c\/li\u003e\n\u003cli\u003eClear instructions and dosing metrics (8 oz per 5,000 gallons = +10 ppm) aid accurate treatment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGranular material can exhibit some clumpiness in storage, which customers reported as a mixed issue.\u003c\/li\u003e\n\u003cli\u003eRequires mixing in a bucket and proper circulation, so it is less convenient than liquid treatments for some users.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePool Mate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActive ingredient\u003c\/td\u003e\n\u003ctd\u003e100% calcium chloride\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e25 pounds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDosing example\u003c\/td\u003e\n\u003ctd\u003e8 oz raises 10 ppm per 5,000 gallons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUse form\u003c\/td\u003e\n\u003ctd\u003eDry granular (dissolve in bucket before adding)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdeal calcium ranges\u003c\/td\u003e\n\u003ctd\u003eVinyl 200-300 ppm; Tile\/Exposed Aggregate 200-400 ppm; Fiberglass\/Marcite\/Painted 250-400 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003ePool Mate's 25-pound calcium hardness increaser is a practical, economical choice for pool owners who monitor chemistry and need to correct low hardness. Its 100% calcium chloride formula dissolves quickly and gives clear dosing guidance, making it effective for preventing surface damage and maintaining recommended ppm ranges. For straightforward hardness adjustments, it delivers good value and predictable results.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow much will this raise my pool hardness?\u003c\/strong\u003e\u003cbr\u003e8 ounces of product will raise calcium hardness about 10 ppm in 5,000 gallons of water; scale dosing accordingly for your pool size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow should I add it to the pool?\u003c\/strong\u003e\u003cbr\u003eMix up to 2 pounds per 5-gallon bucket of pool water, then slowly pour the solution around the pool perimeter while the circulation system runs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich pools is it safe for?\u003c\/strong\u003e\u003cbr\u003eIt is appropriate for vinyl, tile, exposed aggregate, marcite, fiberglass and painted pools when used to reach the specified ppm ranges.\u003c\/p\u003e","brand":"Pool Mate","offers":[{"title":"Default Title","offer_id":48256995393755,"sku":"B07B7ZBCXQ","price":40.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71FDXA6r7iL._AC_SL1500_17987775-68d6-47c3-af5a-b7592979f32d.jpg?v=1778308488","url":"https:\/\/gearmusthave.com\/products\/pool-mate-25-pounds-premium-calcium-hardness-increaser-for-pools-100","provider":"GearMustHave","version":"1.0","type":"link"}