My office tank (15 gal. with 11 fish and 1 adf) was traumatized last weekend. I accidently set the auto feeder too high, and I came to work on Mondat to a very cloudy, smelly tank. On Mon, Tue and Wed I did 20% water changes, and also changed the filter. (carbon with the penguin biowheel) Thursday, it is still cloudy. I'm concerned that this will harm my fish. Should I be doing something else? I should mention that the tank has been fairly clear for the 2.5 years I have maintained it. Comments and suggestions, please!