DRYLOK in Canada? I'm planning on starting a tank and I saw all these really cool backgrounds. It looks like it would be easier to make and install a background before setting the rest of the tank up, so I started looking for materials. Again, DRYLOK sounded easier to use than cement, and equally safe, but I can't seem to find it here.
Has anyone here used it? Where did you get it? Is there something similar that could be used instead?