Replacement blue mineral cartridge for the Spa Frog floating and in-line systems that helps fight algae and bacterias, while also clarifying the water. The mineral cartridge should be replaced once every four months when the spa is being used often by swimmers.
- For use with the FROG Serene Floating or In-Line System
- Use with the FROG Serene Bromine Cartridge for complete water care
- Replace the Mineral Cartridge every 4 months
- If draining/refilling prior to 4 months, replace the Mineral Cartridge at that time
- Water feels softer and is very easy to manage