I'm working on re-sealing a 75 gallon and the frame cracked in the process. I found a website that has a good price but I am concerned about a statement in their FAQ section. They said that a well constructed tank doesn't need frame for support but it is more for Aesthetics. That is the opposite to everything that I have heard in the past. Does their statement make sence? Do I need to even worry about the Crack in my frame? Should I replace the top and bottom frame? If anyone can help me out or shedd some light I would really appreciate it. Thank you friends.