If you're tired of the strong chemical smell, skin irritation, and constant water testing that comes with traditional chlorine, it's time to switch to a smarter solution: the Frog Ease Chlorine Replacement system. This revolutionary spa care method uses the Frog Ease SmartChlor Hot Tub Cartridge and Frog Mineral Cartridge to sanitize your water more effectively—with less effort and ... https://www.poolsplusmore.com/products/frog%C2%AE-ease%C2%AE-in-line-smartchlor%C2%AE-cartridge-3-pack-for-hot-tubs