American Hydro Systems 2656-GL Rid O' Rust Rust Preventer Formula 500, Original Formula, 1 Gallon
Rid O' Rust 1 gallon Formula 500, Original Formula Stain Preventer. Use Rid O' Rust Formula 500 to prevent UGLY rust stains caused by irrigation well water. Apply the formula with American Hydro Systems injection or siphoning system to prevent sprinkler stains from well water forever. Formula 500 is used for water with a pH higher than 6 and hardness of 15 GPG or less. 1 quart of Formula 500 will treat 125,000 gallons of water with 1 ppm iron.