Use only with the FROG @ease Sanitizing System for Swim Spas – the only complete sanitizer exclusively for swim spas up to 3,000 gallons. SmartChlor is a unique, patented chlorine that works with FROG Sanitizing Minerals to kill bacteria 2 ways, and create Fresh Mineral Water in your swim spa – something only FROG delivers.

SmartChlor lasts 3-4 weeks, replace it easily with this Replacement Cartridge, and never touch chemicals – prefilled cartridges mean no measuring, no adding granules or powder by hand after every use, no storing open containers – it’s no mess, no guess, no stress!