can wood put inside the SW tank?

[Bell Guy]

Anybody has experience put some wood inside the SW tank?
I have some beautiful wood that I pick up from the side of lake. I think the wood had been in the water for a long time, have a good shape. I put it in the water for 6 months, and keep change water every month.
Is safe to the live stock put it into the new set up sw tank?
I believe that is a roof of pine tree.


thank you!!!