Check the listing for details. Hot Tub Chlorine Cartridges replacement compatible Frog Ease Floating, 3 packs. Condition: New. Listed at 44.99 USD. The Hot Tub Chlorine Cartridges are designed for easy installation in hot tubs, making it convenient for users to maintain clean and sanitized water. With three packs included, users can ensure a constant supply for their hot tub. This product is suitable for hot tubs and requires assembly for installation, providing a hassle-free solution for keeping pool water crystal clear and healthy.The Hot Tub Chlorine Cartridges are designed for easy installation in hot tubs, making it convenient for users to maintain clean and sanitized water. With three packs included, users can ensure a constant supply for their hot tub. This product is suitable for hot tubs and requires assembly for installation, providing a hassle-free solution for keeping pool water crystal clear and healthy.