I've got a bare bottom tank running the tank dimensions are 60" Long x 18" Wide x 24" Tall. I currently have three HOBs running on the back two are Aqueon Quiet flow 55/75's and the third is a Aquaclear 70. My question is this enough filtration for this size of a tank, I'm interested in monster freshwater fish so if anyone can chime in on this it would be greatly appreciated.