1.5 cubic foot Birm backwashing filter with Fleck 5600 timer.
Birm is a medium specially prepared for iron removal. It has the ability to oxidize iron, and can remove small amounts of iron without pre-treatment, but it works best following aeration. It is also effective at manganese removal. The pH must be 6.8 or above for birm to work properly.
Note: Birm should not be used on chlorinated systems.