4 FROG Serene Bromine Replacement Cartridges for Hot Tubs for use only with FROG Serene In-Line and Floating Sanitizing Systems + FROG Test Strips

4 FROG Serene Bromine Replacement Cartridges for use in FROG Serene (formerly Spa FROG) Floating System or In-Line System with the Mineral Cartridge (sold separately); FROG Serene kills bacteria 2 ways with a low level of bromine and FROG Sanitizing Minerals 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 The FROG Serene Fresh Mineral Water hot tub system uses Bromine and Mineral cartridges designed to destroy bacteria, reduce bromine use by up to 50%* and improve the overall quality of hot tub water You use 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 The Bromine Cartridge can be dialed in to meet your spa’s precise needs and is designed to last 2-4 weeks. It’s prefilled, making replacement quick and easy, plus it’s recyclable when empty