I think I'm going to skip the poly this time. I'm not worried about moisture. I don't use particulate substrate and I never mist. The only water is in the bowl. And, so far, Wiggles has eliminated on the walls. In addition, the board I'm using is formaldehyde free, so I don't need to seal that in. Coating the board with poly doubles the cost and, from experience, I know that poly can take weeks to stop off-gassing. I don't want to wait that long if I don't have to. If I'm wrong, the board not expensive, so I can redo it.











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