Freshwater Salt Cartridge and Mineral Cartridge

Replacement Freshwater Salt System Cartridge plus Replacement Freshwater Mineral Sanitizer Genuine replacement cartridges Work with Hot Spring Highlife Collection, Hot Spring Limelight Collection, Caldera Utopia Series, and Caldera Paradise Series Not compatible with the Hot Spring ACE saltwater system or other pool or hot tub salt systems Replace both approximately every 4 months for the freshest saltwater spa water Reference the owners manual for instructions on switching out cartridges