Anyone know what kind of wood this is?

[baileyjoliver]

While on a recent hike through the woods I came upon this piece of wood. My guess it is left over from a flood a couple of years back and it weighs a frigin ton(I didn't think I would ever get it to the road) .
I was wondering how do you determine what kind of wood is it and how do you know it is safe for your aquarium?

[topfrog007]

Most wood is aquarium safe. For the one's that aren't safe, I'm not sure but there are a few threads if you search for them.

You could always put it in some water and let it sit for bit, then test water conditions after an hour, a day, a week, etc.