I have a 75g tank cycling. I would like to put 2 Oscars and a Green Terror if posible. Does anyone have any advice on this. I have an Emporer 400 on the far left side(if facing tank). A Fluval 404 with the output and input located just right of the center of the tank. The output is mid way in depth and the intake is at bottom. I also have 2 penguin power heads. One is an 1140 with 300 gph and the other is a 660R with 170 gph. Should i use either of these for mor suface agitation or would this be to much? I thought about putting one of them in the far right corner. If so wich should i use?