Resealing a 135 gallon

Hey everybody,

Ok so I have found a 135 gallon tank with stand on CL, the issue being the add posts does not hold water, they informed me that one side needs to be resealed ?
The tank is only 50$ with the stand, so Its looking hard to turn down and I am more than willing to spend some time with this

My question is, how big of a job is this going to be to reseal? What would be a good silicone to use? What cost am I looking at?

They didn't specify which side it was that needed resealing so lets go with worst case scenario

I have an idea on what I want to do and if i can get it up and running I think you guys would be impressed

bump

I didn't even think to ask, emailing them now

For 50 $ the cost of the silicone, and random require tools, I think it should be worth it for a 135, if not it would be a good bearded dragon tank , now it seems it is more a matter of begging a friend to help me pick it up!