Spa Frog Mineral Reservoir

SPA FROG's unique blend of minerals work together to make your water softer and sparkling clear. To keep you relaxing, SPA FROG minerals destroy bacteria while neutralizing pH, and with no assembly required. By dropping it inside your filter cartridge, filter well or skimmer, SPA FROG works with no electricity and no hassles for four full months. It even has an easy to set dial as a reminder to replace it.