Pool Magic+PhosFree is ideal to treat your pool at the beginning and end of each season and toeliminate phosphates at any time as the first step of Natural Chemistry's Clear, Perfect WaterProgram. Pool Magic+PhosFree contains all natural enzymes that break down non-livingorganics to make opening and closing fast and easy. A quick clean up to start off the season andprevents non-living organic staining and phosphate build-up in the off season.PoolMagic+PhosFree contains SMARTZyme technology. SMARTZyme technology wastes notime breaking down non-living organic materials. A small amount of Natural Chemistry'senzymes can treat large amounts of water due to their ability to bind to non-living organiccontaminants and reduce them to smaller and smaller parts, breaking them down to theiroriginal components such as carbon dioxide and water.