On Tue, 27 Feb 2007 15:32:58 GMT, "dadiOH"
wrote:

wrote:
Hi all,

I'm building a large water tank (4' x 4' x 12') out of plywood and
fiberglass (wood outside, fiberglass inside). I was wondering if
SNIP SNIP

I think it might be a good idea to seal the outside of your tank as
well. I would use a lightweight glass and either epoxy or poly resin.
It will stop moisture penetration which will help reduce any movement
which might cause your seams to fail.

Joe