Probably just some fungus from possibly having been exposed to air
while humid for some time. I don't think you'll find any fish that
will touch it but I wouldn't worry about it, once fully submerged it
shoudl go away on it's own. If it doesn't scrub it away with an old
toothbrush or similar. My substrate did this when I left it exposed
for a day during a tank move, once I filled the tank back up it whent
away on it's own.

Hope that helps
Giancarlo Podio

(Negotiator) wrote in message . com...
Hey guys,

I bought a piece of bogwood about two weeks ago and soaked it in hot
water for about a week. Now that it's in my tank it's growing a white
fungus. I was just wondering if this fungus is harmful to the fish and
if there is any kind of fish that'll eat it or a chemical to kill it
(without killing my fish)
Thanks.