{"product_id":"pool-mate-aumentador-de-dureza-de-calcio-para-piscina-25-lb-granulada-disolucion-rapida-y-dosificacion-segura","title":"Pool Mate Calcium Hardness Increaser 25-Pound Granular for Pools — Fast, Safe Hardness Correction","description":"\u003cp\u003e\u003cstrong\u003ePool Mate 25‑Pounds Premium Calcium Hardness Increaser is a granular calcium chloride formula designed to bring pool water calcium hardness into the recommended 200–400 ppm range safely and quickly.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eKeeping calcium hardness within the correct range is essential for preserving pool surfaces and equipment. This dry granular product dissolves into a bucket of pool water and is added slowly to the circulating pool so you can correct low hardness without shocking the entire system. Use a reliable test kit first and follow the product dosing chart to avoid overcorrection.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I know when my pool needs calcium hardness added?\u003c\/h3\u003e\n\u003cp\u003eMeasure calcium hardness with a reliable test kit — low readings indicate the need for this product. Vinyl, tile, exposed aggregate, marcite, fiberglass and painted pools each have target ranges; if your test falls below those targets, add calcium hardness increaser according to the recommended dosing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVinyl pools: target 200–300 ppm\u003c\/li\u003e\n  \u003cli\u003eTile\/exposed aggregate: target 200–400 ppm\u003c\/li\u003e\n  \u003cli\u003eMarcite\/fiberglass\/painted pools: target 250–400 ppm\u003c\/li\u003e\n  \u003cli\u003eTest before and 24 hours after dosing to confirm adjustment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat is the proper way to add Pool Mate calcium increaser?\u003c\/h3\u003e\n\u003cp\u003eDissolve the measured granules in a plastic bucket prefilled with pool water (do not add product to dry buckets). Stir until the granules are fully dissolved, then circulate slowly around the pool perimeter with the pump running to evenly disperse the solution.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUp to 2 pounds of product per 5‑gallon bucket of water\u003c\/li\u003e\n  \u003cli\u003eFor a 10,000‑gallon pool, add no more than 10 pounds every two hours\u003c\/li\u003e\n  \u003cli\u003eAlways keep circulation running during and after addition\u003c\/li\u003e\n  \u003cli\u003eWear appropriate PPE and avoid adding directly to the skimmer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much will this 25‑pound bag change my pool’s calcium hardness?\u003c\/h3\u003e\n\u003cp\u003eDosage depends on pool volume: 8 ounces of product raises calcium hardness roughly 10 ppm in 5,000 gallons of water. Use the included chart to calculate the total pounds needed for your pool size and desired ppm increase, and add in stages if a large correction is required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e8 ounces ≈ +10 ppm per 5,000 gallons\u003c\/li\u003e\n  \u003cli\u003eCalculate target ppm minus current ppm to determine total ounces required\u003c\/li\u003e\n  \u003cli\u003eSplit large additions over multiple dosing intervals to avoid spikes\u003c\/li\u003e\n  \u003cli\u003eRe‑test 24 hours after full dispersion to confirm levels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill adding calcium hardness harm my pool equipment or surface?\u003c\/h3\u003e\n\u003cp\u003eWhen used as directed, this product raises calcium hardness to a protective range that helps reduce corrosive or etching conditions on metal parts and pool surfaces. Overdosing can create cloudy water or scale buildup, so follow dosing guidance and monitor hardness and total alkalinity together for balanced water chemistry.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCorrects low hardness that can cause surface etching\u003c\/li\u003e\n  \u003cli\u003ePrevents corrosion of metal fittings when within target levels\u003c\/li\u003e\n  \u003cli\u003eAvoid excessive dosing to reduce scaling risk\u003c\/li\u003e\n  \u003cli\u003eBalance with alkalinity and pH for optimal results\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Pool Mate 25‑Pounds Premium Calcium Hardness Increaser is intended for pool owners, service technicians, and property managers who need a reliable, measured way to raise calcium hardness in residential or commercial pools. It’s suitable for vinyl, tile, exposed aggregate, marcite, fiberglass and painted pools — particularly when test results show hardness below the recommended range. Always follow label directions, use appropriate personal protection when handling chemicals, and retest water after treatment to confirm balanced chemistry.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much Pool Mate raises calcium hardness per ounce?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: About 8 ounces raises calcium hardness roughly 10 ppm in 5,000 gallons; calculate based on pool volume.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I add Pool Mate directly to the skimmer?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — dissolve in a plastic bucket of pool water first and pour around the pool with circulation running.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Pool Mate","offers":[{"title":"Default Title","offer_id":56818052628820,"sku":"B07B7ZBCXQ","price":127.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/pool-mate-frontal-paquete.jpg?v=1786959543","url":"https:\/\/gardenluxe.co.uk\/products\/pool-mate-aumentador-de-dureza-de-calcio-para-piscina-25-lb-granulada-disolucion-rapida-y-dosificacion-segura","provider":"Gardenluxe Uk","version":"1.0","type":"link"}