AffordableWater.us provides wholesale priced iron, manganese and sulfur filters. The AIO (Air Induction Oxidation) design provides the end user with a low or no maintenance system with no messy chemicals to buy or handle. We use industry standard medias. Greensand Plus removes clear water iron, manganese and low level sulfur. Pyrolox removes clear water iron, manganese and higher levels of sulfur. Birm removes clear water iron only.