I have a 125 gallon tank with an albino channel cat an irridescent shark a florida gar and 2 oscars.. For the first month or so i had the tank i was battling keeping the water clear.. I added some Accuclear i belive and it cleared that water instantly.. Well I had the light off overnight which i normally do and all day today.. I turned on the light a few min ago and the tank is so cloudy! I did nothing different. They eat the same amount of food.. I change the water 30 percent bi-monthly... Why would my water just cloud up??