Pool Frog Above Ground Mineral Reservoir Cartridge 01-12-6112

The Mineral Reservoir 6100 Series deposits into the Cycler, and contains the EPA-registered formula that augments your water treatment and helps to use less chlorine. The minerals continually replenish themselves for added protection against bacteria, as well as keeping your pool's pH balanced by acting as a neutralizer. One Mineral Reservoir will last a full season or up to 6 months; use two reservoirs for year-round pools.