I'd say boil it dry it out and boil again every day for a few weeks that's what I've done, the first time you do it the water will go very dark so you need to keep changing the water your boiling after a few time's you'll notice the water stays cleaner for longer once it stays clear dry it out again and every water change you do make some extra clean water and put the wood in a bucket once its become water logged with the water that would normally go into your tank do a test and see if the water is affected at all if its all good then I'd try in the the tank for a few days and test the water to be safe