Ah! Crack thing in tank!
 

Hi, I just bought this 55 gallon tank used and it had a crack in the frame and I thought that i could just gorilla glue it together but once I put water in it made it separate so it won't stick together! We tried to attach a piece of plastic on the back but that isn't working, so that's what that is in the pic. Thanks.
http://i1044.photobucket.com/albums/...6/S5030689.jpg

nevermind this, just got it fixed. I bolted on a strap to keep in together. Sorry for freaking out haha.

Glad you found a solution. I would have freaked a bit too.

I guess that's a reason it was sold.