1 cubic foot Filox backwashing filter with Fleck 5600 SXT valve and advanced Vortech 9" x 48" tank.

Filox is the most active of iron filters per size, but it requires a strong, daily backwash. Filox filters fail if not backwashed sufficiently. Filox is highly effective with iron, manganese, and hydrogen sulfide. If kept clean, it has a very long life. Filox is recommended where iron levels are high and backwash water is plentiful.