Iron Filter with air injection (AIO) removes ferrous/ferric iron
https://reidstki405.iamarrows.com/do-you-need-an-iron-filter-signs-your-water-is-begging-for-help
Iron Filter with air injection (AIO) removes ferrous/ferric iron and hydrogen sulfide from well water; features Fleck 5600SXT control valve, Katalox Light media, 1-inch NPT bypass, NSF/ANSI 61 components, and auto backwash.