Sorry for asking another weldbond question.
I recently used weldbond to seal a piece of driftwood for use in my vivarium. The first coat did not seem to seal it, so I put on a few more heavy coats. Now when ever the wood gets wet, for example lightly misting the vivarium, the weldbond turns white as if it is absorbing the water and becoming glue again. Any of you people who have used weldbond for backgrounds have this problem? Is this safe? My frogs enjoy sitting on this piece of wood at night. I don’t want them to be harmed. Thanks for your help.

