So bought a piece of driftwood from lfs. Thought this would be easy so I first ran through the dishwasher twice ( no cleaners obviously ) then tried it in tank so that didn't work. Tried boiling it and then left it in the tank for a week. Still floating strong nice hard piece of drift wood still. Guess I am going to have to tie it down some how, maybe to the under gravel filter or something next time I do large pwc. Anyone have any other tricks?