Spa Frog Bromine Cartridge - 6-Pack | SpaDepot.com
Product Description. The bromine cartridge will last 2-4 weeks depending on use. The Spa Frog inline system is factory-installed on selected newer spa models including: Emerald Spas, Coast Spas, Saratoga Spas, Caldera Spas, Marquis Spas, Morgan Spas, Watkins Hot Spot, Pacific Hot Tubs, Catalina Spas, Cal Spas, and Leisure Bay spas.