I'm starting to have an infestation of mold in my Pyxie's cage. Substrate is plain coco fiber, though there is a pothos vine in there as well. I know mold is inevitable in such a warm and humid environment but besides turning to springtails is there anything I can do about this? I spot remove the mold I see but I've heard it comes and goes and isn't harmful to Frog. Is this true?

Cage is a 24L 18W 12H exo terra. Ventilation is restricted not in any way.