Fungus?

[Christine--kidsowngeckos]

After three days of use, white spots have appeared on the mopani wood adhered to the vivarium that was bought (second hand) for our son's gargoyle gecko.
-what is it?
-is it a concern?
-if so, how do we remove it?

 

[Rbishop]

Was the viv/wood dried out from not being in use?

 

[Christine--kidsowngeckos]

Yes