King Technologies Filter Frog Mineral Replacement Stick for use w/Filter Cartridges, 4 Month Life (01-14-3712)

Reduce the usage of chlorine and bromine by up to 50%, stop faded swimsuits and powerful odors with FILTER FROG. Designed to fit conveniently inside of your spas filter cartridge, this is the only hot tub mineral sanitizer designed with the patented FROG mineral protection for hot tubs up to 600 gallons, FILTER FROG lasts up to 4 months, and features an easy reminder dial to help you remember when to replace it. Supplement with a low level of chlorine or bromine and hot tub care is complete with soft water and a crystal clear shine.