Thanks everyone. Finally got some good coraline growth on the rocks now, and the reason I went with a clear corner over flow is because I got the tank off a guy on craigslist for $$200 along with the stand and canopy. Granted I have to sand down and refinish the whole stand and all, but 200 dollars is a steal I think for what I got. So I wasnt to worried about the corner overflow. I know that they get more dirty than say the black ones, but the tank is built very well and the guy only had it up and runnin about 8 months before he and his wife got a divorce and blah blah blah so he needed some cash and quick and I reaped the benefits of his tank Sorry for the long winded explanation of the clear corner overflow haah