I've been given some very nice, large pieces of driftwood for future tanks. My question is - how do I make it tank safe? The wood is from the Hudson River, collected along the banks. The only thing I can think of doing is buying a large metal trough & putting it over a bonfire to boil the wood. I plan on collecting more this summer when it's a wee bit warmer. Any suggestions are appreciated. Not worrying about water logging the wood, just making sure it's safe for FW stock.