it could take a few days or weeks to completely water log the piece, depending on how large it is. if you have a clean barrel or garbage bin, you could try using that.
if it still doesn't stay sunk, you could always result in securing a piece of slate to the part of the driftwood that would be touching the tank bottom. that would help keeping it down.
hope this helps!
if it still doesn't stay sunk, you could always result in securing a piece of slate to the part of the driftwood that would be touching the tank bottom. that would help keeping it down.
hope this helps!