2000-3000 gallon Plywood tank

[KevinK]

tagging along as I'm up for a plywood tank as soon as we soled our house (and the new tank we want bigger)

gust wondering

what is the diferance between the west 7 epoxy at a fairly $$$$

or the 5 gallon pails thy use for decking, as thy are only about $145 for 5 gallon, where west 7 is I think the same for only 1 gallon.

ore could you maybe laminate, so first a few coats with the cheaper for structure and stabillety, and then west 7 to seal it all off