I just got 2 little corns today and I only have one question...I did a ton of research and I know that pine shavings cannot be used for a substrate, but can I use it for the sides of the tank? they're pretty small now, so I'm splitting a 20 gal aquarium for them until they get bigger. I've got a pine board that I'd like to use to ut the tank in half, but I want to make sure I can do that before I put them in there. should I seal it first, or should it be okay if it's dust free? thanks for your help!