I was looking at using some black pvc pipe with elbows and end caps with this topfin air 8000 we have sitting around, in either the 125g or my daughters 75g that she doesn't know she's getting for xmas. Planned to drill small holes along the pipe just to provide extra oxygen and 'effect' in the tank. Has anyone done anything similar to this before? Any suggestions in the best way of doing it? I w as thinking of the pipe going down the backside of the tank and on both left and right sides with the front left alone.