FROG Serene (formerly Spa FROG) Bromine Cartridge - 4 Pack
Brand: Frog

FROG Serene Bromine Cartridge is used with the FROG Serene Mineral Cartridge in either the Floating or In-Line System for complete water care that kills bacteria 2 ways and maintains cleaner, clearer, softer water that's easier to take care of. Simply set per the chart in the manual based on the hot tub gallons and snap into one of the holders. If using the In-Line System, snap into the bottom holder with the minerals on the bottom. The Bromine Cartridge will last 2-4 weeks depending on the hot tub size and use.

For use with the FROG Serene Floating or In-Line System
Use with the FROG Serene Mineral Cartridge for complete water care
Replace the Bromine Cartridge when empty (approximately every 2-4 weeks
When using with FROG Minerals, bromine use can be reduced up to 50% to 1.0 ppm
Water feels softer and is very easy to manage