I am working on setting up a 55g lake Malawi mbuna tank. I have the rocks all set up now I am wondering how to best position my filters and powerhead. I have my rocks piled up down there centre of the tank going the length of the tank so I have room in front and behind them. I have an Eheim 2217 filter, an AC70 filter and a Hydor Koralia powerhead. What I was thinking of doing was putting the Eheim intake on the back left side, the spraybar outut in the back right oriented vertically so that it sprays a current down the back of the tank toward the intake. I would put the powerhead in the front right pushing current toward the front left to create a counter clockwise current in the tank. I would place the AC70 somewhere near the middle of the tank and I was hoping this would give me enough aeration for proper oxygenation of the water since the spraybar will be vertical and not provide surface agitation.