The FROG Serene Cartridge Kit comes with 3 FROG Bromine Cartridges and 1 FROG Mineral Cartridge. These cartridges are for the Spa FROG Serene Floating System or pre-installed Spa FROG inline system.
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The FROG Serene Cartridge Kit comes with 3 FROG Bromine Cartridges and 1 FROG Mineral Cartridge. These cartridges are for the Spa FROG Serene Floating System or pre-installed Spa FROG inline system.