{"product_id":"puri-tech-calcium-hardness-increaser-plus-10-lb-94-calcium-chloride-fast-dissolving-to-prevent-corrosion-staining","title":"Puri Tech Calcium Hardness Increaser Plus — 10 lb 94% Calcium Chloride, Fast-Dissolving to Prevent Corrosion \u0026 Staining","description":"\u003cstrong\u003ePuri Tech Calcium Hardness Increaser Plus is a fast-dissolving 94% calcium chloride formula in a 10 lb resealable bag that raises pool calcium hardness to help reduce corrosion and staining.\u003c\/strong\u003e\n\n\u003cp\u003eKeeping pool water chemistry balanced includes maintaining the right calcium hardness level. Low calcium hardness can accelerate wear on plaster, metal fixtures, and equipment, while overly high levels can cause scaling. Puri Tech's Calcium Hardness Increaser Plus is formulated to quickly and evenly raise calcium hardness, helping preserve pool surfaces and hardware. The product ships in a convenient 10 lb resealable bag for easy storage and seasonal use.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly will this product dissolve and affect my pool water?\u003c\/h3\u003e\n\u003cp\u003eThe Puri Tech formula is fast-dissolving to promote even distribution throughout the water, reducing localized concentration spots. You’ll generally see the chemical disperse within minutes, though full mixing depends on pump circulation and water volume.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFast-dissolving 94% calcium chloride granules for rapid dispersion.\u003c\/li\u003e\n  \u003cli\u003eBest results when added with pump and filter running for several hours.\u003c\/li\u003e\n  \u003cli\u003eUse small, measured additions to avoid sudden overcorrection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I dose this 10 lb bag for my pool size?\u003c\/h3\u003e\n\u003cp\u003eDosing varies by initial hardness reading and pool volume; always test water before adding chemicals. Start with recommended increments and retest after circulation to reach the target calcium hardness level without overshooting.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTest water hardness first using a reliable pool test kit.\u003c\/li\u003e\n  \u003cli\u003eAdd product in measured amounts per manufacturer dosing table based on gallons.\u003c\/li\u003e\n  \u003cli\u003eRetest after several hours of circulation and repeat as needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this prevent corrosion and staining on pool surfaces?\u003c\/h3\u003e\n\u003cp\u003eRaising calcium hardness to an appropriate range helps reduce aggressive, corrosive water conditions that can attack plaster and metal. While it contributes to corrosion and stain prevention, it works best as part of a balanced water-care program including proper pH, alkalinity, and sanitizer levels.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncreases calcium hardness to reduce water aggressiveness.\u003c\/li\u003e\n  \u003cli\u003eHelps protect plaster, tile grout, and metal fixtures when used with balanced chemistry.\u003c\/li\u003e\n  \u003cli\u003eNot a standalone fix—combine with pH and alkalinity control for full protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is the product packaged and stored for seasonal use?\u003c\/h3\u003e\n\u003cp\u003eThe 10 lb resealable bag is designed for convenient handling and storage between treatments. Reseal the bag after each use and store in a cool, dry place away from moisture and sunlight to maintain product effectiveness.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e10 lb resealable bag reduces spills and keeps granules dry.\u003c\/li\u003e\n  \u003cli\u003eStore out of direct sunlight and moisture to preserve performance.\u003c\/li\u003e\n  \u003cli\u003eLabel includes basic dosing guidance—keep instructions handy for repeat use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Puri Tech Calcium Hardness Increaser Plus is intended for pool owners, service pros, and maintenance teams who need a reliable, high-purity calcium chloride product to raise hardness levels. It suits in-ground and above-ground pools and spas where low hardness is causing potential surface or equipment issues. Use it as part of a comprehensive water-balance routine—test, dose, circulate, and retest—to maintain healthy pool surfaces and components.\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: Can I add this product directly to my pool water?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes; add small measured amounts directly with the pump running and retest hardness after circulation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this suitable for spas as well as pools?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it can be used in spas; adjust dosing for smaller water volume and retest carefully.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Puri Tech","offers":[{"title":"Default Title","offer_id":56830579114324,"sku":"B012B9HU8C","price":84.21,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/puri-tech-calcium-hardness-front-packaging.jpg?v=1787005986","url":"https:\/\/gardenluxe.co.uk\/products\/puri-tech-calcium-hardness-increaser-plus-10-lb-94-calcium-chloride-fast-dissolving-to-prevent-corrosion-staining","provider":"Gardenluxe Uk","version":"1.0","type":"link"}