Also, if you have used some sort of epoxy or other material to patch the seam of a tank, I'd be happy to try that route. Some pool guys came out, charged me a lot of money to smear some gook on there that didn't do any good. I have used something called Pipe Leak Fix in the past to stop leaks at joins in the pool plumbing, but last season when I used it, I used too much or something, because it looked like an elephant sneezed on it. It looked disgusting. Eventually, I had to replace the whole affair with new PVC piping instead of a flexible hose. I'm wondering, though, if that Pipe Leak Fix might do the trick on the tank. I can put up with a glob of unsightly elephant snot on the tank, if it gets me through another season. But I think the tank is leaking under the collar now, too. Probably a good idea to just replace the whole thing.
Thanks.