{"title":"Hot Tub Things - Stain \u0026 Scale Control","description":"","products":[{"product_id":"hot-tub-things-calcium-increaser-32oz","title":"Hot Tub Things® Calcium Increaser – Spa Hardness Booster","description":"\u003cul class=\"a-unordered-list a-vertical a-spacing-mini\"\u003e\n\u003cli data-start=\"499\" data-end=\"542\"\u003e\n\u003cp data-start=\"501\" data-end=\"542\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003ePrecision liquid formula raises spa water calcium hardness efficiently, helping prevent corrosive “hungry” water that can damage heaters, plumbing, and metallic parts.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"543\" data-end=\"586\"\u003e\n\u003cp data-start=\"545\" data-end=\"586\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIdeal for weekly use or fresh fills in spas with low or softened water, restoring balance without overshooting to scale-forming levels.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"587\" data-end=\"630\"\u003e\n\u003cp data-start=\"589\" data-end=\"630\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eHelps minimize foam, cloudiness, and sanitizer demand by maintaining stable hardness—essential for optimal sanitizer effectiveness.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"631\" data-end=\"674\"\u003e\n\u003cp data-start=\"633\" data-end=\"674\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eCompatible with all hot tub sanitizer types—including chlorine, bromine, saltwater, and mineral systems—simplifying your chemical routine.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"675\" data-end=\"718\"\u003e\n\u003cp data-start=\"677\" data-end=\"718\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eConvenient 32 oz bottle with marked dosing lines makes it easy to add precise amounts based on spa volume.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"719\" data-end=\"842\"\u003e\n\u003cp data-start=\"721\" data-end=\"842\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eBacked by Hot Tub Things’ quality assurance, safety-tested for spa use and formulated without harsh fillers—trusted by professionals and DIYers.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hot Tub Things","offers":[{"title":"Default Title","offer_id":43717587894584,"sku":"30209","price":25.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/1570\/3864\/files\/3sFsaePWFIbXmtUPrsm08Qc_0_gps_generated.png?v=1768735239"},{"product_id":"hot-tub-things-metal-out-16oz","title":"Hot Tub Things® Metal Out (16 fl oz) – Spa \u0026 Hot Tub Stain \u0026 Scale Preventer","description":"\u003cp\u003e\u003cspan\u003eHot Tub Things® Metal Out is a professional-grade sequestering agent specifically formulated to prevent stains and scale formation in spas and hot tubs. This powerful 16 fl oz treatment removes iron, copper, manganese, and other dissolved metals that cause discoloration and buildup on spa surfaces and equipment. Whether you're filling your spa with well water or municipal water, Metal Out protects your investment by keeping water clear and surfaces pristine.\u003c\/span\u003e\u003c\/p\u003e","brand":"Hot Tub Things","offers":[{"title":"16 fl oz","offer_id":52194098184504,"sku":"30213","price":22.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/1570\/3864\/files\/fLNsafObG4bXmtUPrsm08Qc_0_gps_generated.png?v=1768731563"},{"product_id":"hot-tub-things-stain-scale-control-32oz","title":"Hot Tub Things® Stain \u0026 Scale Control – Spa Mineral Remover","description":"\u003cp class=\"mb-4 last:mb-0\"\u003eHot Tub Things® Stain \u0026amp; Scale Control is a concentrated 32 oz formula specifically designed to prevent and remove mineral stains and scale buildup in hot tubs and spas. This powerful yet gentle treatment works by sequestering minerals like iron, copper, calcium, and manganese before they can attach to spa surfaces or form cloudy deposits in your water.\u003c\/p\u003e\n\u003cp class=\"mb-4 last:mb-0\"\u003eWhether you're dealing with hard water issues, rusty discoloration, or calcium buildup on your spa shell and equipment, this mineral remover provides fast-acting results without harsh chemicals that could damage your hot tub components or irritate your skin.\u003c\/p\u003e","brand":"Hot Tub Things","offers":[{"title":"32 fl oz","offer_id":51585212285240,"sku":"51117","price":27.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/1570\/3864\/files\/PFhbadqXEeu4yrMPl7DzEQ_1_gps_generated.png?v=1767594185"}],"url":"https:\/\/www.hottubthings.com\/collections\/hot-tub-things-stain-scale-control.oembed","provider":"Hot Tub Things","version":"1.0","type":"link"}