Spa Frog Serene Mineral Cartridge

The cartridge continuously releases minerals into your spa water that help control bacteria and neutralize contaminants. Because these minerals do the heavy lifting, you can significantly lower your chlorine or bromine levels compared to a standard hot tub setup.

The Spa Frog Serene is highly versatile and designed to work with both floating systems and built-in inline systems. As long as your hot tub supports standard mineral cartridge insertion or floating dispensers, it should be compatible.

No, it does not replace sanitizers entirely. You will still need to maintain a low level of chlorine or bromine to ensure your water remains fully sanitized, but the mineral cartridge allows you to operate at much lower, more comfortable chemical levels.

The cartridge is designed to last for four months of consistent use. We recommend marking your calendar for the four-month mark, as the mineral output will gradually deplete and no longer provide the same level of water balancing.

Yes, it noticeably improves both. By reducing your reliance on harsh chemicals, the water feels softer on your skin and lacks the strong, stinging chemical odor often associated with traditional hot tub maintenance.