125 gallon tank problem

[Death angel]

I just picked up a 125 that is 3 years old for 100 bucks. Looks great but only one possible problem. The top of the tank has a 12" glass plate that runs under the center support that is cracked. Does it support the tank or would it be ok to silicone it and leave it. If needed I could take it out and replace it but I would like to avoid this if possible.

 

[slipknottin]

There's glass under the center support? Is it siliconed to the sides of the tank?

 

[Death angel]

Yes. It looks like I have to replace it