{"title":"Cartridges","description":"\u003cp\u003eCartridges for your Hot Tub or Swim Spa primarily serve two critical roles; mechanical filtration to remove physical debris and chemical sanitization to maintain water safety. \u003c\/p\u003e\n\u003cp\u003eBrowse our selection of cartridges or contact your dedicated Spas Unlimited service team to find the right cartridge for your spa needs!\u003c\/p\u003e","products":[{"product_id":"freshwater-salt-cartridges-3-pack","title":"Freshwater Salt Cartridges - 3 pack","description":"\u003cp\u003eThis box includes 3 of the salt cartridges by Freshwater\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e**Replace cartridge every 4 months depending on usage**\u003c\/strong\u003e\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":40082712297568,"sku":"","price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/FWSSCartridge3PackBox.jpg?v=1774470933"},{"product_id":"salt-system-cartridge-single","title":"Salt System Cartridge - Single","description":"Individual salt system cartridge","brand":"My Store","offers":[{"title":"Default Title","offer_id":40082723012704,"sku":"","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/FWSSCartridgewithBoxcopy.jpg?v=1776109694"},{"product_id":"frog-ease-chlorine-cartridge","title":"FROG @Ease Chlorine Cartridge","description":"","brand":"Hot Tubs Unlimited","offers":[{"title":"Default Title","offer_id":40297811083360,"sku":"","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/smartchlorcartridge.jpg?v=1708724853"},{"product_id":"frog-ease-mineral-cartridge","title":"FROG @Ease Mineral Cartridge","description":"For use in the Frog @ease in-line system","brand":"Hot Tubs Unlimited","offers":[{"title":"Default Title","offer_id":40297950183520,"sku":"","price":42.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/FrogMineral.jpg?v=1774459550"},{"product_id":"frog-ease-smartchlor-3-pk","title":"FROG @ease SmartChlor (3\/pk)","description":"\u003cp\u003e Fresh Mineral Water with SmartChlor® Technology in one floating system!  Blue \u003ca href=\"https:\/\/essentials-spasupplies.com\/frog-ease-smartchlor-3pk\" target=\"_blank\"\u003eMineral Cartridge\u003c\/a\u003e and Silver SmartChlor® Cartridge snap together and float in the hot tub.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cbr\u003eThe unique SmartChlor® Technology slowly releases over 3-4 weeks. When the \u003ca href=\"https:\/\/essentials-spasupplies.com\/frog-ease-floating-sanitizing-system\" target=\"_blank\"\u003esystem\u003c\/a\u003e flips over it is time to replace. 3 replacements per package. For use in any hot tub up to 600 gallons.\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eUp to 75% Less Chlorine Usage\u003c\/li\u003e\n\u003cli\u003eOnly \u003ca href=\"https:\/\/essentials-spasupplies.com\/mineral-harmony-refresh-shock-1lb\" target=\"_blank\"\u003eShock\u003c\/a\u003e Once a Month\u003c\/li\u003e\n\u003cli\u003eSmartChlor® Self Regulates for Continuous Clear Water\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Spas Unlimited Online","offers":[{"title":"Default Title","offer_id":40926713446496,"sku":"","price":64.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/FrogChlorCarts.jpg?v=1775151720"},{"product_id":"frog-ease-swim-spa-smartchlor-cartridge","title":"FROG @ease Swim Spa SmartChlor Cartridge","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eFor use only with the FROG® @ease® Sanitizing System for Swim Spas. The unique SmartChlor® Technology self-regulates, slowly releasing over 3-4 weeks for a consistent Free Chlorine level that is Cyanuric Acid free. This Cartridge is translucent gray – you can see the SmartChlor® inside! When the System flips over, it’s time to replace it.\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Spas Unlimited Online","offers":[{"title":"Default Title","offer_id":40926713970784,"sku":"2582","price":54.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/FrogSwimCart.jpg?v=1717180130"},{"product_id":"frog-ease-floating-sanitizing-system","title":"FROG @ease Floating Sanitizing System","description":"\u003cdiv\u003eFresh Mineral Water with SmartChlor® technology in one floating system!  Blue Mineral Cartridge and Silver Smartchlor® Cartridge snap together and float in the hot tub.  Floating system includes a Jump Start shock packet and a 30 count bottle of @ease test strips. \u003c\/div\u003e\n\u003c!----\u003e","brand":"Spas Unlimited Online","offers":[{"title":"Default Title","offer_id":40926717018208,"sku":"2575","price":54.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/FrogHotTubSystem.jpg?v=1775151720"},{"product_id":"frog-serene-floating-system","title":"FROG Serene Floating System","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cspan\u003eFROG® Serene Floating System uses pre-filled mineral cartridges and bromine cartridges that snap into a reusable floating holder and works in any spa. \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe FROG® SERENE Floating System transforms spas into the perfect environment for soothing relaxation with up to 50% less bromine needed than standard bromine spas. \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCartridges are easily adjusted to meet the sanitizing needs of virtually any size spa. Replace the \u003c\/span\u003e\u003ca href=\"https:\/\/www.essentials-spasupplies.com\/frog-serene-mineral-cartridge\" target=\"_blank\"\u003emineral cartridge\u003c\/a\u003e\u003cspan\u003e every 4 months when you drain and refill your spa. The \u003c\/span\u003e\u003ca href=\"https:\/\/www.essentials-spasupplies.com\/frog-serene-bromine-cartridge\" target=\"_blank\"\u003ebromine cartridge\u003c\/a\u003e\u003cspan\u003e will last 2-4 weeks depending on use.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Essentials","offers":[{"title":"Default Title","offer_id":42561549762656,"sku":"2525","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/Screenshot2026-02-05at2.32.10PM.png?v=1774460408"},{"product_id":"frog-serene-cartridge-kit","title":"FROG Serene Cartridge Kit","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eIncludes 1 FROG® Serene Mineral cartridge and 3 FROG® Serene Bromine cartridges.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Spas Unlimited Online","offers":[{"title":"Default Title","offer_id":42561555103840,"sku":null,"price":229.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/Screenshot2026-02-05at2.50.40PM.png?v=1774460283"},{"product_id":"frog-serene-mineral-cartridge-refil","title":"FROG Serene Mineral Cartridge Refil","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cspan\u003eFROG® Serene Mineral Cartridge refill for use in either the FROG® Serene Floating System, or for users of the FROG® Serene Inline System which is factory-installed in the spa.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Spas Unlimited Online","offers":[{"title":"Default Title","offer_id":42561559167072,"sku":null,"price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/Screenshot2026-02-05at2.57.42PM.png?v=1774460186"},{"product_id":"frog-serene-bromine-cartridge","title":"FROG Serene Bromine Cartridge","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cspan\u003eFROG® Serene Bromine Cartridge refill for use in either the FROG® Serene Floating System, or for users of the FROG® Serene Inline System which is factory-installed in the spa. \u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Essentials","offers":[{"title":"Default Title","offer_id":42561562443872,"sku":"2535","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/Screenshot2026-02-05at3.03.55PM.png?v=1774460036"},{"product_id":"resin-prefilter-su-rp2000","title":"Resin Prefilter SU-RP2000","description":"\u003cp\u003eThe Darlly SU-RP2000 Resin Prefilter is a high capacity water softener and filter designed for filling hot tubs, swim spas, and even pools. \u003c\/p\u003e\n\u003cp\u003eIt is specifically used as a \"first line of defense\" to treat tap or well water before it enters your spa system. \u003c\/p\u003e","brand":"Darlly","offers":[{"title":"Default Title","offer_id":42730597351520,"sku":null,"price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/SU-RP2000.Cartridge.jpg?v=1777493959"},{"product_id":"su-cp2000-cartridge","title":"Carbon Prefilter SU-CP2000 Cartridge","description":"\u003cp\u003eThe Darlly SU-CP2000 Carbon Prefilter cartridge is a high-capacity water purification tool used to fill hot tubs, swim spas, and even pools. Unlike the resin version (SU-RP2000) which focuses on softening the hard water, this carbon filter is designed to remove chemicals and odors from both municipal and well water. \u003c\/p\u003e","brand":"Darlly","offers":[{"title":"Default Title","offer_id":42730634903648,"sku":null,"price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/SU-CP2000.Cartridge.jpg?v=1777494956"},{"product_id":"frog-ease-in-line-smartchlor-kit","title":"Frog @Ease In-Line SmartChlor Kit","description":"\u003cp\u003eTry out the Frog @Ease In-Line SmartChlor Kit\u003c\/p\u003e\n\u003cp\u003eA fresh approach to clean, clear water using mineral technology that uniquely offers these 4 advantages:\u003c\/p\u003e\n\u003cp\u003e1) CLEANER - because it kills bacteria two ways - with minerals and a low level of chlorine.\u003c\/p\u003e\n\u003cp\u003e2) CLEARER - minerals help keep the pH balanced for water that shines.\u003c\/p\u003e\n\u003cp\u003e3) SOFTER - minerals condition your water for that smooth relaxing feel.\u003c\/p\u003e\n\u003cp\u003e4) EASIER - Cartridges are prefilled for no mess, no guess, and no added stress, making maintenance a breeze.\u003c\/p\u003e","brand":"Watkins","offers":[{"title":"Default Title","offer_id":42783726633056,"sku":null,"price":31.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/3221\/4624\/files\/1C4DDABA-A783-415D-8DA1-7E7627B806F3.jpg?v=1780429927"}],"url":"https:\/\/spasunlimited.myshopify.com\/collections\/cartridges.oembed","provider":"Spas Unlimited Online","version":"1.0","type":"link"}