FROG @ease SmartChlor® Replacement Cartridge for Floating System - Swim Spas Freshwater Brand Each box contains:

Each box contains:

total alkalinity and calcium hardness

PLEASE READ:

Size: 2 lbs

FROG @ease SmartChlor® Replacement Cartridge for Floating System - Swim Spas Freshwater Brand Each box contains:FOR SWIM SPAS ONLY The FROG @ease Smartchlor Replacement Cartridge works exclusively with the FROG @ease Floating Sanitizing System for Swim Spas. The SmartChlor Cartridge lasts 3 4 weeks depending on swim spa size and use. Each box contains (1) SmartChlor replacement cartridge. Looking For Other Parts of the FROG Swim Spa System? You can find the FROG @ease Floating Sanitizing System for Swim Spas here. The FROG Maintain Oxidizer for Swim Spas can be