Tbh that’s why I’m confused because I have immense amounts of ventilation. Maybe just too much moisture then. I’ll try to wipe some off til she molts then deal with it then. Last thing I want is a grumpy old world in premolt being disturbed haha.
@Abe yowakim That's mold. Wood always molds in a moist enclosure - there's absolutely nothing you can do except getting cork bark. And you could think about a cleanup crew, but I'd really switch to cork bark.