Need some info! Building a frag tank out of plywood.

[IronRising]

Hey guys, I posted this over in diy as well. Thought I might get some more people looking if I put it here too.

I'm in the middle of planning a build For a frag tank that has multi tiers out of plywood. It's cheap, easy to design with wood and should be nice and strong. My one issue is sealing the tanks. I've been doing some looking around online and two part epoxy seems to be the way to go. My one problem seems to be I can't find any that are fish safe in Alberta. I called a company in the states but it was 250 dollars for shipping for a 1 gallon paint can because the have to ship as a hazardous material. Does anybody know where I can get some in the Alberta area. Or can recomend a substitute to epoxy?