R.W. Behan wrote:
I believe you'll do better if you coat the inside of the tanks with
fiberglass, using the epoxy resin. Had a friend build some tanks that way
and they served quite well. Sure, the expoxy is supposed to be a good
moisture barrier itself, but the added expense of the 'glass is well worth
it.


Glass yes, epoxy no.

I believe Vinyl ester resin is the prefered choice for fule tanks.

Richard