I don't know that you can give acros too much flow as long as it is random and not blowing directly on them. In my 36x22x22" tank I have two orca 6105s at 80%, two MP40s at 75%, a Nero 5 at 70% and a jebao MP40 knock off at 60% The return is a jebao DCP 5000 running at 70%
