{"product_id":"natural-chemistry-spa-calcium-hardness-increaser-1-83-lb-raise-spa-calcium-to-150-250-ppm","title":"Natural Chemistry Spa Calcium Hardness Increaser – 1.83 lb | Raise Spa Calcium to 150–250 ppm","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMaintain balanced spa water with Natural Chemistry Spa Calcium Hardness Increaser. This 1.83 lb bottle is designed to gently raise calcium hardness in your spa or hot tub, helping keep water within a stable range for a more comfortable soak. When calcium is too low, water can feel corrosive and cloudy water may appear. By nudging hardness toward the recommended 150–250 ppm, you may experience a more consistent balance that supports clearer water and safer surfaces over time.\u003c\/p\u003e\n\u003cp\u003eTrusted as part of Natural Chemistry’s proven line of spa solutions, this product is built to work with your existing care routine. It emphasizes reliability and straightforward maintenance, so you can manage spa chemistry with confidence rather than guesswork.\u003c\/p\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eRaises Calcium Hardness: Lifts the calcium level to support a balanced water profile.\u003c\/li\u003e\n  \u003cli\u003eIdeal Hardness Range: Keeps water within 150–250 ppm to help protect surfaces and keep water clear.\u003c\/li\u003e\n  \u003cli\u003eEquipment Protection: Reducing low-hardness conditions can help guard spa surfaces, plumbing, and heaters over time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow it works in practice\u003c\/h3\u003e\n\u003cp\u003eAfter testing your spa water, apply the recommended amount directly into the spa water while the circulating pump runs on high. The product reacts as it meets water, so pre-dissolving is not advised due to heat generation. Run the circulation for at least 20 minutes, then retest and adjust if needed. Natural Chemistry products are designed to deliver reliable results within common spa care routines.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eUsage steps align with typical maintenance: test, measure, apply, circulate, retest.\u003c\/li\u003e\n  \u003cli\u003eRetesting helps confirm whether another adjustment is needed for ongoing balance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eResults can vary with each spa, but maintaining proper calcium hardness supports a more predictable balance and can contribute to clearer water and improved feel during soaks. This product complements a broader set of Natural Chemistry spa solutions designed to support regular maintenance without overhauling your setup.\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: What does Natural Chemistry Spa Calcium Hardness Increaser do?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It raises calcium hardness in spa water to help keep the water within the 150–250 ppm range, supporting balanced water and protecting surfaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I use it?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Test the hardness, add the measured amount directly into the spa with the pump on high, circulate at least 20 minutes, then retest and adjust if needed; do not pre-dissolve.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Natural Chemistry","offers":[{"title":"Default Title","offer_id":43989540143238,"sku":"B07BTW1DK5","price":18.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/1602\/5478\/files\/natural-chemistry-spa-calcium-hardness-increaser-bottle.jpg?v=1778872596","url":"https:\/\/patiozora.com\/products\/natural-chemistry-spa-calcium-hardness-increaser-1-83-lb-raise-spa-calcium-to-150-250-ppm","provider":"PatioZora","version":"1.0","type":"link"}