I'm adding 2 peaces of malaysian driftwood and just have a few questions. I've been soaking it in boiling water for 3 days now but just read that it is fine to throw it in the tank as soon as I buy it. Is this true? When I touch the wood its still very sappy and not sure if I should put it in till the sap is gone. Also not sure of the best way to get rid of the sap. Thanks