I think I had it on a driftwood I had that once eventually turned to slime and I chucked it, but only time will tell whether yours is going to stay or go or develop into something else. You will just have to keep an eye on the tank, make sure everyone looks happy, that the water doesn't start to stink, and that it still looks pretty. You could also try boiling the wood and see if that kills whatever it is if you don't like it. The wood I had it on was found at the sea though, wasn't a bought bogwood like yours.