Spa Frog Mineral Purifier For Use In Spa Filter Core has unique design draws water in through the openings in the cap and the scooped louvers at the top and circulates it through mineral formula for greatest effectiveness. Water is then released through the bottom openings. Simply supplement with a low level of bromine or chlorine.
- Fresh mineral water system for hot tubs up to 600 gal
- Kills bacteria with up to 50% less bromine
- Conveniently fits inside a filter cartridge
- Lasts 4 months or whenever you drain your hot tub
- Simply supplement with a low level of dichlor or bromine
- Use with Frog jump start for an effective start-up shock when refilling the tub
- Compatible with ozone or UV