3 Pack OF Silver Ion Cartridges to last 1 year in all compatible spas

the Freshwater Silver Ion (AG+) Purifier continuously introduces silver ions into your Hot Spring spa water to inhibit bacteria growth.

It completes the Everfresh system making your Hot Spring spa easy to manage and halogen-free while improving the performance of your ozone-equipped spa.

This assures a healthy, safe, odour-free spa which also significantly improves the look and feel of your spa water.

It simplifies water balance and it's unaffected by heat. Replace the cartridge every four months for on-going protection.