Freshwater Salt System Cartridges help you have better water with less hassle. This unique system makes spa ownership easier than ever by removing the guesswork and hassle of water care maintenance. Simply replace your cartridge once every four months and add Spa Salt as needed to keep your chlorine levels steady year round.

For use exclusively with HotSpring FreshWater Salt System on current Highlife and Limelight spa Models. 

Set of 3 - Each cartridge last four months.