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If you have a proper place for it, you could always water log the wood outside of the tank and add it later. That is what I do with mine because it bothers me to see it floating around in the tank. I put my driftwood in a bucket of water and with it down with rocks to make it log faster.. Or at least it feels like it logs faster that way. Change water daily as well so the tannins from the wood leech out as well.
Yep, soak it in another container until it becomes water logged. I've got a piece soaking at the moment, had it in there for 3 days and it is slowly going down.