FROG Serene Replacement Mineral Cartridges for Use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 2 Pack

Keep your hot tub in great condition and ready for use with FROG Serene Mineral Replacement Cartridges. When used with the FROG Serene Bromine Cartridge, the FROG Serene Mineral Replacement Cartridge offers a state-of-the-art solution designed to maintain pristine water quality in your hot tub. This spa mineral cartridge seamlessly works in either the FROG’s Serene Floating System or In-Line System, allowing for efficient sanitization through a combination of low-level bromine and FROG sanitizing minerals. FROG Serene effectively eliminates contaminents, ensuring clear and inviting water while reducing bromine usage by up to 50%*. Unlike chlorine-based systems, using a bromine cartridge for your hot tub ensures that bromine dissolves slowly in hot water, making it easier to regulate and less affected by pH swings. This results in less odor and more consistent sanitizing performance, allowing you to spend more time enjoying your spa and less time monitoring water chemistry. FROG Serene's dual-action approach not only conditions the water for softness but also helps keep pH levels balanced. Designed with convenience in mind, the FROG Serene mineral cartridge offers hassle-free cartridge replacement, requiring minimal effort to maintain optimal water conditions. Each prefilled mineral cartridge lasts up to four months or until the hot tub is drained and refilled whichever is shorter. For more than 25 years, FROG has sanitized pools, hot tubs and swim spas with its innovative, patented Mineral Technology that makes water care easier. FROG's prefilled cartridges mean no mess, no guess and no stress water care for your pools, hot tubs and swim spas. Each FROG product helps make your water cleaner, clearer, softer and easier. No matter what size pool, hot tub or swim spa you have, FROG has a solution for it. *Compared to the minimum ANSI recommended chlorine level of 2.0 ppm fo