I've picked up several pieces from the local river mouth. I go during low tide to find my pieces.
I'm trying to get enough to fill my 240G free.
All of mine are way to big to soak in anything other then the 240. I have no idea what types of wood they are either. I might rent a sand blaster or pressure washer to get rid of any rotten wood. (I tried to pick pieces that felt solid)
After that, I'll leave them in the 240G for probably a month with some feeders to see how they do.
If the feeders stay alive, and I can still see them after a month (sometimes tannins really suck). I'll start my loach community.