Pool Frog Mineral Cartridge for IG Pool

The POOL FROG® Mineral Reservoir , which contains our EPA registered mineral formula and fits inside the Cycler. 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 the full season or up to 6 months; use two reservoirs for year-round pools.