• ✅Compatible with: Mineral Cartridge Replacement Compatible with FROG @Ease in-Line SmartChlor Mineral Cartridge System for Marquis, Caldera, Artesian & Hot Springs Spas.


• ✅COMPATIBILITY: For use only in certain hot tub models up to 600 gallons: Artesian Elite, Artesian Island (optional on Artesian Island Elite and South Seas); Marquis Crown (optional on Marquis Elite, Vector, and Celebrity); Caldera Vacanza; and Hot Spring Hot Spot.


• ✅ EFFECTIVE CLEANING: Minerals Cartridges work with SmartChlor (sold separately) a patented, condition the water for softness and help keep p H balanced. Not only is the water wonderfully soft, but it is also odor-free.


• ✅VALUE PACK: Includes 2 Mineral Cartridge that lasts 4 months depending upon hot tub size and usage; ideal for a 600-gallon hot tub.