FROG @Ease Replacement SmartChlor Cartridge for use with Swim Spa FROG @Ease Floating System - Swim Spa Sanitizer System Supports Less Chlorine Use - 3 Pack

Swim Spa Replacement Cartridges: FROG SmartChlor Cartridges are designed for use with the FROG @ease Floating Sanitizing System; perfect for swim spas up to 3000 gallonsSelf-Regulating Water Treatment: SmartChlor Cartridges...