Description Spa Frog’s Mineral Cartridge provides spa and hot tub owners utilizing the Spa Frog System with an easy way to introduce water softening minerals into their systems in a handy self-contained replaceable cartridge, eliminating the need for time-consuming chemical additives. Mineral Cartridge softens water as well as making it easy on your skin and eyes to provide a bathing environment that chlorine-based systems cannot match. Refills for use in the Spa Frog Floating System or Spa Frog In-line System, factory-installed in selected newer spa models including: Emerald, Saratoga, Caldera, Marquis, Morgan, Watkins Hot Spot, Pacific Hot Tubs, and Leisure Bay spas. Minerals used on max setting #6. Features: For use with Spa Frog floating and In-Line Systems One cartridge last 4 months Used with companion Frog Bromine Cartridges. Spa Frog Mineral Cartridge 5.3 oz. Frog® Serene Mineral Replacement Cartridge
