Hot Tub Serum Turbo Mineral Purifier | Spa Cartridge Brand_DuraVent SmartStep is the "best of

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

Effective Length 4"

and water that feels noticeably softer against your skin

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Hot Tub Serum Turbo Mineral Purifier | Spa Cartridge Brand_DuraVent SmartStep is the "best ofThe 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,