Thats exactly what i was saying.Er trying to say when i was talking about the majority of the bark is off. But i dont use a piece of wood unless the are critters under it,ontop of it,because its a sign that it isnt safe.Most of the well preserved softwoods such as pines,have been sumbereged deep in cold waters often more than 100 years.,that being said if you find a run-of -themill pine tree that has fallen due to rot, i advise against placing it into your aquaria. Now a pine that is still in the earth but dead nonetheless is a different story.