I have had my 360 gallon aquarium set up for a about 5 months now and while I keep up on my weekly water changes and gravel cleanings my water never seems to be super clear. I have two power heads running on the tank now 1300 gph and 500 gph and my filtration is an overflow box that runs the water down to the filtration material in my 75 sump that. The sump pump is a mag drive 2400 gph pumps and even with all this my tank seems to consistently be partially cloudy, any ideas what I could to to help? Stock are a couple large SD, lg BGK, lots of syno catfish and many other small cichlids and catfish.