Help! Is this mold?

[deranged chipmunk]

Yup, it is fairly light. I figured when it was not sinking it was grape wood, part of the reason I stopped using it in an aquatic set up. Would it be wise to not use it in a WTF enclosure?

Let it go for a bit. See how it fares. If you get any mold, I would yank it immediately.


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