I have a 40yr old 65 or 75 gallon tank that has been empty for about 35 years at room temperature ( not stored in garage ). It's glass with clear sealant at the seams. Right now, I cannot get to it to inspect it b/c I will need help pulling it off the lower shelf and onto the stand. What are the odds that it might hold water and not leak?
Is there a way to test for leaks without filling the tank up?
I went to LFS
and asked for a price to clean and set up the tank and they told me I had to set it up and test for leaks 1st. Obviously, I won't need them after I get the required help to liberate, clean and fill the tank.
I'm worried about a 75 gallon flood.
Can new sealant be placed over old sealant? Or does old sealant need to be completely removed?