Put my rock sculpture in my 58, and added my new bio wheel 350 filter to it. To get it to fit, I had to saw the corners of the outflows off. That was fun, my couch is full of plastic shavings now. I gave my aquatech 20-40 filter that I took off the tank to my neighbor. She has a horrifically overstocked 10 gallon (four large goldfish and a common pleco... I know, I've tried to explain things to her, but she is attached) and more filtration can at least help a little bit. And now to do some water changes.