FROG @ease In-Line SmartChlor Replacement Chlorine Cartridge 3-Pack for Marquis Spas, Caldera Spas, Artesian Spas and Hot Springs Spas up to 600 gallons; Hot Tub Sanitizer with No Cyanuric Acid

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 and hot tubs up to 600 gallons For use only with FROG @ease In-Line Mineral Cartridge, both are prefilled for no mess, no guess and no stress.

Together, the @ease system combines the proven FROG mineral formula with SmartChlor Technnology Kills bacteria 2 ways with FROG Sanitizing Minerals that kill bacteria and SmartChlor – a unique, patented chlorine that self-regulates and maintains a consistent low Free Chlorine level.

Say goodbye to constant monitoring The FROG @ease In-Line System uses up to 75% less chlorine* so it’s easier on skin, hair, swimsuits and your hot tub’s surfaces.