{"product_id":"hth-plus-calcium-hardness-increaser-25-lb","title":"HTH PLUS Calcium Hardness Increaser 25 lb","description":"\u003cdiv\u003e\n\u003cp\u003eHTH PLUS Calcium Hardness Increaser, in a practical 25 lb bag, is the smart choice for keeping pool water balanced and protecting your pool surfaces and equipment. This dedicated calcium hardness increaser raises calcium levels to the optimal range, helping prevent surface damage and corrosion that soft water can cause over time.\u003c\/p\u003e \u003ch3\u003eWhy calcium hardness matters in your pool\u003c\/h3\u003e\n\u003cp\u003eLow calcium hardness can lead to etching, rough plaster, and unnecessary wear on metal components. By maintaining appropriate calcium levels, you create a stable water balance that enhances the longevity of your pool finish, reduces maintenance headaches, and supports overall water quality. This is especially important for plaster and concrete pools that are more sensitive to hardness fluctuations.\u003c\/p\u003e \u003ch3\u003eWhat makes HTH PLUS stand out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eEconomical 25 lb container\u003c\/strong\u003e designed for ongoing maintenance in mid- to large-size pools\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFormulated for quick dissolution\u003c\/strong\u003e and even distribution as the circulation system runs\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTrustworthy HTH brand\u003c\/strong\u003e with the PLUS sub-brand pedigree, backed by years of pool chemistry know-how\u003c\/li\u003e \u003cli\u003eSpecifically designed to raise total calcium hardness without altering your pH balance when used as directed\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSimple, effective use in real life\u003c\/h3\u003e\n\u003cp\u003eUse this product when test results show calcium hardness below the recommended range for your pool type. With the circulation system on, broadcast the dosage around the pool perimeter or near returns, then allow the water to circulate and re-test after several hours. Always follow the label directions for dosage amounts and safety guidance. This approach minimizes overshoot and helps you reach a stable hardness level more predictably.\u003c\/p\u003e \u003ch3\u003eWho benefits most\u003c\/h3\u003e\n\u003cp\u003eIdeal for pools with soft-fill water, plaster, or concrete surfaces, and for anyone looking to protect their equipment from the effects of low calcium levels. Suitable for both in-ground and above-ground setups where balanced water chemistry is critical for long-term durability and enjoyment.\u003c\/p\u003e \u003ch3\u003ePractical tips for best results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePair calcium hardness maintenance with regular pH and total alkalinity checks for a balanced triad of pool chemistry\u003c\/li\u003e \u003cli\u003eTest water at least weekly during the swim season, and after heavy rainfall or dilution events\u003c\/li\u003e \u003cli\u003eStore the 25 lb bag in a cool, dry place to preserve its effectiveness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hth","offers":[{"title":"Default Title","offer_id":52209579688210,"sku":"8136539","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/8136539_A.eps_High.jpg?v=1776816364","url":"https:\/\/nationalhardwaregroup.com\/products\/hth-plus-calcium-hardness-increaser-25-lb","provider":"National Hardware Group","version":"1.0","type":"link"}