I added a 3rd powerhead into my tank tonight to get some more flow, it seems a 90g tank should have 3 or 4 from what others have. This is how I have them now, this fine, or should I move them around some more? I may add a 4th powerhead if need be.
The powerhead in the back right aims into the rock formation there, into a gap between a couple rocks and comes out the front side.
