Requires a gravel under bedding.
10" dia. x 54" tall tank holds 1.5 cubic feet.
Conditions for Operation:
Alkalinity should be greater than two times the combined sulfate and chloride concentration
pH - 6.8+
Dissolved Oxygen (D.O.) content must be equal to at least 15% of the iron (or iron and manganese content)
Bed Depth - 30 - 36 in.
Backwash Rate - 10-12 gpm. sq. ft.
Backwash Bed Expansion - 35 -50% of bed depth
Service Flow rate - 3.5 - 5 gpm. sq. ft. intermittent flow rates and/or favorable conditions may allow higher flow rates
Note: We cannot sell Birm into the state of California due to Proposition 65.