After building the tank for Gary's boat out of fiberglass, I am Not anxious to build another one, just Too much time and expense, and yes, I coated the tank with epoxy, steel flex, but I have since learned that I could buy an aluminum tank, already built to to spec's for les money, I don't think
I'll do that again.
Many of my response's I make to post here are, maybe, based on phone calls and emails ...
Auminum tanks are my preference, but poly tanks are good, just Really expensive to get one
made to your own spec's.
Listen to Rich, he's the guy in the business.