The POOL FROG Mineral Reservoir, which contains a proprietary blend of minerals and fits inside the Cycler. The minerals continually replenish themselves for added protection against bacteria and algae, 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.
Fits 5400, 5600, 5430 & 5790 series Frog Units
