Sorry to disagree with everyone on this subject, but I am in the process of building a tank. I have just completed the cabinet, a total of 37 dollars. Of course I have access to a steel shop and welder to build the frame, and I enclosed it with some nice wood, stain, and polyurethane. I have the glass cut and sitting in my closet, and will start on this next. Glass cost 97 dollars. 3/8 inch. Will make a 80 gallon tank.
It might hold water, then again it might not. We will see. I enjoy doing things myself, and get a sense of accompishment. I own my own house, and have found out that things are not as compicated as people make it, as I do repairs and projects myself, and save thousands.