PoolRx + is an EPA Registered Algaecide, that saves time and money at every pool and spa. PoolRx eliminates all types of algae fast, and prevents algae from coming back. PoolRx typically reduces chlorine demand by 50% and the minerals last up to 6 months! A PoolRx booster can be added, when needed for longer seasons, tough conditions, or larger pools. PoolRx supports any size body of water and is perfect for both residential and commercial use.