Old tank, could it be unsafe?

[stw280]

Some of the silicone at the seems of my 75 gallon look to be wearing. I just bought a 210 gallon and I am getting rid of the 75 but did not want to sell a doomed tank. Could anyone show me some pictures of some tanks in trouble. Or is their anything I can do for this tank i.e. "re-glue" it. Thanks.

 

[stang66200]

I had a glass tank that started to leak after a year or so of not being used. I used a razor blade to gently peel the old silicon out of the corners. Then I put a nice bead of aquarium safe silicon all around (I forgot where my dad got it, but you can probably get it out a good pet supply shop or a hardware store). I let it set up for about 2 days. It hasn't leaked in 4 years. If you have any questions, drop me a PM.
edit: don't forget to clean the seams really well before you apply the silicon.

 

[stw280]

Thanks alot hopefully it wont begin to leak.

 

[jurichar]

my 55 is about 25 years old. for about 15 of those years it was in our attic. Aside from a few minor scratches, it hasnt failed yet. It doesnt even have the plastic rings on the top and bottom....they were removed at some point in history.