Includes 1 Mineral Cartridge that lasts 4 months plus 3 FROG @ease SmartChlor Cartridges, each lasts up to 3-4 weeks depending upon hot tub size and usage; ideal for 600 gallon hot tub.

Swim spas are not pools, and not hot tubs, so they can ... before and after every use. FROG @ease kills bacteria 2 ways, with FROG Sanitizing Minerals™ and SmartChlor ®, a unique, patented ...