west 7 epoxy vs cheap all purpes fiberglass resin

[KevinK]

ok so I have read a fair bit about plywood tanks, and some use paint + west 7 ore other use only west 7.

now I dont know, but wonder.

industreal plastics sells general purples waxed resin (also used for decking and so),

now :
A- I wonder would this be ok to use for making a sump, display tank ?, is not why not
B – if west 7 needs to be applied, cant you not first build up layers with resin and maybe a mesh ore 2 in there out of the general resin, and kind of paint it off with the west 7.

overall the consideration is that west 7, when needed for a300+ gallon tank (with a thickness of 1/5 inch ore so, will also run in the $$$$, while a 5 gal drum of the general resin is lie only $140 ore so.

not to cut corners, but wonder what the difference would be on the end resold, other than the price tag.

so whome build a plywood tank out of general resin, ore what resin did you use ?