Brand: FROGColor: BlueFeatures: Hot Tub Sanitizing System: The FROG @ease Floating System floats when working, flips when empty; its perfect for hot tubs up to 600 gallons; replace the Mineral Cartridge only once every four months and the SmartChlor Cartridge every 3 to 4...

Brand: FROGFeatures: For use only in certain hot tub models: Artesian Elite, Artesian Island (optional on Artesian Island Elite and South Seas); Marquis Crown (optional on Marquis Elite, Vector and Celebrity); Caldera Vacanza; and Hot Spring Hot Spot. Includes 1 Mineral Cartridge that lasts...

Brand: FROGColor: silverFeatures: Hot Tub Replacement Cartridges: FROG SmartChlor Cartridges are designed for use with the FROG @ease Floating Sanitizing System; perfect for hot tubs up to 600 gallons Self-Regulating Water Treatment: SmartChlor Cartridges require no maintenance or monitoring; each cartridge lasts 3 to...