Re-sealing a tank

Is there anyone out there that has any great ways to re-seal a tank?

I picked up a free 125gal today in Gig Harbor and it has a small leak in one of the seam. Any advice as to what product and the best way of going about the re-sealing of the area that is leaking?

Here's a good article on the matter

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Good luck. I also plan on re-sealing a tank within the next couple weeks.

Awesome. Thanks Alex. That site was quite informative. I am going to get started first thing tomorrow.

That was a good step by step article. Just to add something if you don't already know. You don't need to but the expensive "aquarium sealant" at the LFS. You can buy 100% pure silicone at home depot and it will be fish safe. But they are coming out with a new "mold fighting agent" in some of the silicone. Just make sure it doesn't have that, it isn't fish safe. It will say right on the back

GE silicone I is fish safe i don't believe it say it i have used that one several times now without a problem
also use take near the corners so you can peal if off and have straight professional lines