With the exception of one small piece of malaysian driftwood, all the wood that I use in my tanks came straight out of creek bottoms. It took a while to find good pieces, but well worth it. Also, it took a while to clean them and they produced a lot of tannins at first for a while, but they were free and you can't beat that. I've considered multiple times buying very large malaysian pieces for $80 +, but I can just never get myself to spend that much money on wood