- Sep 21, 2003
I have been rethinking my circulation for a new setup. I now have 2 terbelle stream6060 power heads each with a output of 1600 gph. Question is where to put them in the 90 gal tank so that everything is now being pounded by the current. Also I will be reducing the flow thru the overflow from 1600 gph to somewhere in the 700 gph range. So the 2 questions are placement of powerheads and right amount of flow thru a sump. Return pump will be a Mag9.5 running up and aimed at the back of the rock. will all this give me the right flow or not.Something I thought about was having the return go to a spray bar behind the rock but was concerned about hydro going out and that would drain the tank. Hope this makes sense and any ideas would be appreciated.