Resealing a 125

[RTCfan86]

Has anyone ever resealed a tank around 125 gallons (72 x 18 x 20)? I just bought one from a guy, used, Wednesday. It has been filled since Wednesday night, but today one of the seams broke and the tank drained in my basement. Is it difficult to reseal a tank this size? I have never done it before. Or would I be better off finding a company that does it? I'm in Fraser, MI.

 

[Water]

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I'm in the process of resealing one of my large tanks too. From what I've heard, it isn't too hard and this video makes it seem like a piece of cake. I'm still trying to remove the old silicone though since the old owner did a craptastic job on it.

 

[RTCfan86]

I'll probably need to remove the front pane of glass since it separated ftom one of the side panes. The frame of the tank is a 4 piece frame, so once I put the front face back on, what will hold it on while I reseal the inside seams?