{"product_id":"spa-frog-serene-4-month-refill-kit-1-mineral-4-bromine-cartridges","title":"Spa FROG Serene 4-Month Refill Kit – 1 Mineral + 4 Bromine Cartridges","description":"\u003cp\u003e\u003cstrong\u003eA full 4 months of Serene refills in one box, matched to how the cartridges actually wear out.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe blue mineral cartridge lasts up to 4 months. The yellow bromine cartridge lasts about 1 month. The standard refill kit has 1 mineral + 3 bromine, so you run out of bromine a month before the mineral is done. This kit adds the 4th bromine cartridge so both run out together.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1× Spa FROG Serene Cartridge Refill Kit – 1 Mineral + 3 Bromine Cartridges (01-14-3856)\u003c\/li\u003e\n\u003cli\u003e1× Spa FROG Serene Bromine Cartridge (01-14-3824)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFits the FROG Serene floating system for hot tubs up to 600 gallons. FROG minerals let you use up to 50% less bromine for softer, gentler water.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSave vs. buying the refill kit and extra cartridge separately. Free US shipping over $65.\u003c\/em\u003e\u003c\/p\u003e","brand":"King Technology","offers":[{"title":"Default Title","offer_id":67762149622045,"sku":"FRG01143856-BNDL4M","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0852\/1177\/5261\/files\/FRG01143856_0_2754a6ee-ba59-4138-a722-10597a753593.jpg?v=1791948090","url":"https:\/\/theiconhome.com\/products\/spa-frog-serene-4-month-refill-kit-1-mineral-4-bromine-cartridges","provider":"The Icon Home","version":"1.0","type":"link"}