My homemade iron/rust remover for pool. It works well as you can see all the nasty gook in the top. We now have clearer water. VERY EASY to make. Gallon water jug, drill holes in bottom, pack it tight with quilt batting the kind thats like a mat, hook it up to the return hose. WHAALAA . When u turn it off, REMOVE from pool but keep it above water line. When starting up do it outside, as some of the rust settles and will shoot out in the pool. You r done swimming in chocolate milk.