i was thinking of trying to build a tank. starting out small like a 10 or 20 gallon. and eventually building a much bigger tank. just wondering if anyone had any suggestions on what type of material would be best and how thick it should be. or if anyone has done this please give some pointers and tips. i have been tossing this idea around for a while. just want to get some feed back and some ideas from MFKs. thanks everyone