A year or so back I built a wooden stand for my ball python tank, and I am now wanting to add to it and build a couple matching wood "display units" that would stack on top of the stand. The bottom unit would have two enclosures, one for each of my BPs. The second unit that would stack on top would have 3 (maybe 4) enclosures that could house anything from frogs, geckos, tarantulas, scorpions, etc. I plan to install a misting system throughout the enclosures as well, which brings me to my question.

If I seal the wood, would it be suitable for a tropical environment? If so, how many coats of sealer would be needed to ensure that the water would not damage the wood?