stupid sump question
evening all, this might be a really stupid question, but i will ask anyway.
iam adding a sump to my tank soon, the tank will be drilled at the top, just below water level. i have a eheim compact 5000 return pump.
here is the dumb part. how do you make sure that the flow from the tank though the drillled hole in to the sump is not to much for the return pump so the sump does not fill full, or vice versa that the return pump does not pump to much water back to the tank so it over flows the tank.
does that make sense.
My 1st Tank