Ok, before I dive into cleaning my small tanks.... I started my 30 gallon tank about a week ago. Yes, because of things taking place and tanks going out the door.... I had to short-cycle it. It ran for two days, then I added fish. This is the first tank i've had where I am running an undergravel filter. When I set it up, I used the gravel out of an older tank that had been running for quite some time. I decommissioned it at the same time I was puting this one together. I also added mucho cycle when I kicked it off. Not trusting the whole undergravel thing I used the Penguin 150 bio-wheel with the filter that was used in the other tank as well. I found out the powerheads I was using on the towers were too low in the tank, so I raised them. My water turned very milky and cloudy. My test kit three nights ago told me that ammonia=0, nitrites=.25 nitrates=0 and ph=7.0-7.1 I did a 30% water change and added an Aquaclear filter to the tank as well from another tank I was decomm'ing. Filter media is well cycled in it as well. Last night tested water again, which is still cloudy. Ammonia=0 Nitrites=0 Nitrates=0 Ph=7.8 How does that work? Two filters going on it and it will not clear up. Any ideas? Thank you!