Detritus Removal From BB Tank?

[Doug]

Because of where our tanks our, {a friends & my new one}, behind a wall, we are trying to run our large becketts direct from the tank to see if they skim better or, as per this subject, collect more of the detritus.

Our sumps are real low flow and only serve for co2 reactors, kalk and level control. I wonder if the Mak 4 driven beckett, would take up more floating detritus than a pair of overflows feeding high flow to a sump?