FROG Serene Floating System

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FROG® Serene Floating System uses pre-filled mineral cartridges and bromine cartridges that snap into a reusable floating holder and works in any spa. The FROG® SERENE Floating Sys tem transforms spas into the perfect environment for soothing relaxation with up to 50% less bromine needed than standard bromine spas. Cartridges are easily adjusted to meet the sanitizing needs of virtually any size spa. Replace the mineral cartridge every 4 months when you drain and refill your spa. The bromine cartridge will last 2-4 weeks depending on use. Show more