driftwood isnt completely safe until it has been soaked for as long as 3 to 4 weeks, or until it stops turning the water that wierd amber color. a trick someone tought me once, boil the driftwood. if you boil it then soak it, youll notice that the water doesnt change color at all. after driftood is boiled for about 10 to 20 minutes(depending on size) it is almost immidiately ready to put in the tank. boiling also helps when you have a piece that wont sink. for anyone who doesnt believe me, test it yourself. boil driftwood for 20 minutes, the put it in a bucket of water. test the levels before and after the driftwood is put in, and they wont change. wow long reply.huh oh well