Frog Serene Start Up Pack. (2 Bromine Cartridge, 1 Mineral Cartridge)
- Fresh Mineral Water System for Hot Tubs up to 600 gallons
- Pre-filled cartridges for no mess, no guess and no stress water care
- Kills bacteria with up to 50% less bromine*
- The Mineral Cartridge lasts 4 months or whenever you drain your hot tub
- Larger sized Bromine Cartridges lasts 3-4 weeks depending on hot tub usage
- Easy to use with weeks of consistent and effective water sanitization