Hot Tub Serum Turbo Mineral Purifier | Spa Cartridge Brand_DuraVent Unscrew the round cap on

Unscrew the round cap on the plug that holds the cable in place

SmartStep is the "best of the best" for square and round spas alike

and this cartridge covers the newer configuration with a handle on top and a 2-11/16 inch open bottom

Heat & Glo Galleria 30 Front

waterfalls

Hot Tub Serum Turbo Mineral Purifier | Spa Cartridge Brand_DuraVent Unscrew the round cap onThe Hot Tub Serum Turbo Mineral Purifier is a slow release mineral cartridge that gives you cleaner, softer spa water the natural way and lets you cut your chlorine or bromine use dramatically. Sized to drop straight into your filter housing, it uses the time tested purifying power of silver and copper to keep bacteria and algae in check for up to four months at a time. The "triple action" name captures what it does: it reduces bacteria naturally,