if its thats bad i'd just loose the wood then. What i do with driftwood that i use is i'll soak it in a bleach water solution for about 24 hours. Then rinse it well, i'll rinse rinse rinse, then let it sit in a bucket of water for a day or two. The piece i have in my 10 gallon stays pretty wet and it gets a tiny tiny bit of white mold but springtails eat it up