This FROG Mineral Cartridge fits easily into the FROG Serene Floating System green reusable holder, or into the installed In-Line system. FROG Sanitizing Minerals together with the FROG Bromine cartridge kill bacteria with up to 50% less bromine*. With less bromine you'll enjoy softer feeling water that's easier on skin, swimsuits and hot tub surfaces. FROG Serene creates Fresh Mineral Water in your hot tub. Prefilled cartridges and one-dose packets mean no mess, no guess, and no stress. The Mineral Cartridge lasts 4 months, the Bromine Cartridge lasts up to 4 weeks, depending upon hot tub size and usage, it’s ideal for up to a 600 gallon hot tub. Only FROG Test Strips show the ideal low level of bromine needed for FROG Serene hot tubs, other test strips may cause confusion. And FROG Maintain gives you a quick and easy non-chlorine shock to help keep your hot tub clean. *Compared to the minimum ANSI recommended bromine level of 2.0 ppm for a hot tub.

  • This listing includes 1 FROG Sanitizing Mineral Cartridge, which lasts 4 months; minerals kill bacteria, condition the water for softness and absorb acids – water feels much more comfortable
  • The FROG Serene Fresh Mineral Water hot tub system uses Bromine and Mineral Cartridges designed to kill bacteria, reduce bromine use by up to 50%* and improve the overall quality of hot tub water. *Compared to the minimum ANSI recommended bromine level of 2.0 ppm for a hot tub.
  • You use less bromine, making water easier on skin, hair, swimsuits, and your hot tub’s surfaces. FROG Sanitizing Minerals kill bacteria while conditioning the water for softness and absorbing acid to help keep pH balanced