Frame is there for support in the corners. My cross brace on the other hand, silicone let go. My tank is a 90 gal. The canopy would not fit because the glass bowed out over half an inch. Suggestions, leave it all on. I had to get two people to help me put a brace in middle to pull tank together. Nothing worse then the tank sides letting do. Like I said frame at the top keeps the corners together. Lots of pressure on the glass. Learned that in Physics, cant remember the formula, but if your interested I could get it.
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Just starting tank. Was always told \"there\'s no such thing as a dumb question\"
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