I like DIY projects and I've thought about building a tank for a long time. I guess my questions here are more out of curiosity and the desire to understand why things are done than anything else. I like glass tanks a lot for a display, I really like the fact that they are more difficult to scratch and you can get low carbon glass that give really good clarity. My questions have to do with assembling the glass panels. I've read that the bottom panel of glass should be raised slightly off the bottom so that it does not fracture. Does this always have to be the case? Can you not allow the bottom glass panel to rest on a flat surface so it doesn't get damaged? Does it matter on the size of the tank? If the bottom panel is really large and there's a significant amount of weight above it (for example hundreds of gallons of water) can it not cause too much stress on the bottom panel of glass if it is not resting on a surface? Here are the three ways that it seems a tank could be assembled: Does it matter whether you are using glass or acrylic when you choose how to assemble? If anyone has any experience with building a tank themselves, I would love to hear what is the right way (or should I say "best way") to build a tank.