Unique, patent-pending technology makes the FreshWater Salt System the best salt water system for hot tubs. The titanium cartridge creates chlorine from salt to sanitize the spa water. For use with compatible 2019+ newer Hot Spring & Caldera hot tubs.
One 3-pack of FreshWater Salt System titanium cartridges gives you up to a year’s worth of water care.*
*Many factors affect the life of spa water, such as bather load and water chemistry. When these factors are accounted for and the spa is properly maintained, the FreshWater Salt System will keep water clean and clear for a full year.