Easy-to-use cartridge containing an EPA-registered mineral formula that destroys bacteria and reduces chlorine or bromine use up to 50%.  

• Reduces sanitizer demand and simplifies water care
• Improves filter efficiency
• Fits most filters
• Lasts up to four months in spas up to 600 gallons

Tips:
Drain and refill hot tub and replace cartridge every 3 to 4 months. Frequently clean your spa filter.

Compatible with:
Chlorine, bromine, ozone and non-chlorine shock.