I have had bushy nose plecos eat it in the past. If it is the same thing I experienced, it only appeared on wood that hadn't been in a tank previously. Once it was consumed, it did not return.
K ty, I have a plec I'm 90 %sure is a female bn I'll let it live in there until its clean then itll go in my future rainbow tank. Ty again and yes it's only on the new additions.