We are working on processing about 65 gals a wk. Attached is a pic of the Magnesol filtering setup. It works, but there's got to be a better way . The "tower" has 3 4" diameter bags inside each other. 10-5-1 micron. The pump in the barrel is set about 4 inches off the bottom of the barrell, so most of the bio pulled is very clear already. It gravity feeds through the filters, then siphons into 6 gallon containers.
Heard some of you use diaphram pumps to pull bio through the filters.