2 FROG Serene Mineral Replacement Cartridges for Hot Tubs for only with FROG Serene in-Line and Floating Sanitizing Systems for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer

For in FROG Serene (formerly Spa FROG) Floating System or In-Line System with the Bromine Cartridge (sold separately); FROG Serene sanitizes hot tub water with a low level of bromine and FROG Sanitizing Minerals The FROG Serene Fresh Mineral Water hot tub system Bromine and Mineral Cartridges that kills bacteria and reduces bromine by up to 50%* and improve the overall quality of hot tub water. *Compared to the minimum ANSI recommended chlorine level of 2.0 ppm for a hot tub. Unlike chlorine, bromine slowly dissolves in hot water so it’s easier to regulate, has far less odors and is less impacted by pH swings making sanitizing more effective. Say goodbye to constant monitoring You less bromine, making water easier on skin, hair, swimsuits, and your hot tub’s surfaces. FROG Sanitizing Minerals condition the water for softness and absorb acid to help keep pH balanced Each Mineral Cartridge lasts four months or whenever the hot tub is drained and refilled. It’s prefilled, eliminates the work and guesswork, and makes replacement quick and easy, plus it’s recyclable when empty