I have an 80 gal tank with 2 Oscars and 2 albino Plecos. my water has been cloudy since the day we started. i do weekly water changes. and i tried some of that water clear stuff and nothin seems to be workin. Im not sure but i was thinking the light might have something to do with it. right now the tank is at 79 degrees and i leave the light on for like 6 to 8 hours. Any help or info would be appreciated.