toxicfish;499900; said:... being that the top and bottom frame is the actual support for the tank not the glass.
Most tanks these days have the top and bottom frame made of plastic. The glass from my 100g will hold my weight. The plastic frame will not.
Point being, the glass is very strong stuff and carries the weight/strength of the tank. The frame is there for looks mostly (it is also used to prevent point loading in most designs.)