Just did a 60% water change on 40 and 55 gallon tanks. I have an emperor 400 and whisper 50 on the 40 gallon. I have an aquaclear 110 and a hot magnum canister filter on the 55 gal. Tanks have been running a week since water change and water is super cloudy on goth tanks. All water perameters are on target. Have plants and driftwood in both tanks, but nothing new. Any ideas whats going on? Never had this problem before.