2 Pack: Mineral Spa Frog Replacement
FROG Serene Mineral Cartridge is used with the FROG Serene Bromine 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 wide open to #6 and snap into one of the holders. If the In-Line snap into the top holder with the bromine on the bottom. Minerals will last 4 months.
