I have a 175 gallon bowfront aquarium and I need advice on where to place powerheads. Currently, I am running Koralia 4 (1200gph - not on wavemaker) which is positioned at the back-center of the tank facing straight out - no tilt. I just ordered to more powerheads rated at 1600gph a piece and these will be on wavemakers. Can anyone tell me where I should place these new powerheads? Thanks.