I built this box out of the hard pink foam board and I had an idea. I want to build a “face” for it and the face will have a substrate barrier and sliding glass doors and ventilation at the top. Basically turning it into a big vivarium. I believe they the foam should be sealed? Or can I just put hygrolon over it? I guess I mean is it that we’re trying to keep the frogs from touching it or it leaching into the water that might be at the bottom of the tank? Does that make sense?