Today I was siting at the table wrapping gifts when I hers a loud crack. I jumped up and was looking all over the glass and checking the rocks. Everything was good until I looked in the top and noticed the enter support that is connected to the top rim of the tank is almost completely broke off. I'm freaking out! I just started this tank and I don't want anything bad to happen to it. I have 2 20g tanks and I am going to be getting them out of storage and getting them ready in case I have to set the up( in the event of a leak) but I am praying nothing happens to it. Can anyone please tell me what to do. Should I try to replace the rim, can I even do that? Or do I have nothing to worry about (yeah right)?