Product Details Flippin' Frog is a bacteria killing, mineral and chlorine sanitizer for soft-sided pools between 2,000 and 5,000 gallons. This system simply floats on the pool surface and automatically dispenses a combination of minerals and chlorine which fight bacteria and combat algae together to keep your pool sparkling clear. Delivering you fresh, sparkling water! When the chlorine runs out the Flippin' Frog flips over all by itself to let you know that it needs replacing! With no installation or plumbing hassles. The minerals last 6 months and the chlorine cartridge lasts 2-4 weeks. Features: For pools with up to 5,000 gallons of water Minerals last approximately 6 months Cartridge lasts for 2-4 weeks Unique Float & Flip technology tells you when to replace the chlorine cartridge Kills bacteria 2 ways with minerals and low levels of chlorine Less work with no daily dosing Soft water that's easy on skin A neutral pH with less monitoring Prevents smelly odors and bleached suits