7100481 - Whole House Iron Hydrogen And Manganese Removal 2.0 Cu Ft SystemWhole House Iron Hydrogen And Manganese Removal 2. 0 Cu Ft System This whole house 2. 0 cubic foot iron filter system is a unique chemical free approach to removing red staining iron, rotten egg smelling hydrogen sulfide, and black staining manganese from water. This system uses natural air to charge the water with oxygen. Together the oxygen and contaminants are introduced onto the surface of the catalytic filtration media. The media uses the oxygen