Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Boiling can do several things:
If the wood came from a wet source (river, lake) boiling is one way to kill possible pathogens. If the wood came from a dry source, a land plant that never fell into the lake, then water born pathogens that attack fish are not likely to be found in or on the wood.
Boiling can help remove tannins a bit faster.
Boiling can help the wood soak in water faster, so it sinks faster.
After a month of soaking with plenty of water changes I would not bother to boil it.
If it is still giving off too many tannins, then OK, boil it, and see if that helps.
If it has not sunk by now, (I understand yours has) it will probably never sink, so figure out how to attach it to some kind of base that will be buried in substrate.
A month without a host can kill many pathogens, but it is up to you how comfortable you feel about the source and whether you are ready to add the wood to a tank.
Nice picture, king kong!