I have 4 old 20 gallon tanks and want to take the long pieces of glass and make 1 or 2 30x30x12 cube tanks. Anyone ever do this? I was quoted 51$ for a base piece 30"x30" of polished (which I don't need) untempered 1/4" thick glass. Looked into epoxy/plywood method but looks like a gallon of epoxy alone is like 70$ so the cost would be quite prohibitive for 1 tank and comparable for 2 but a lot more work. I could see it paying off for larger/more tanks.