Posted: Tue Dec 22, 2009 8:37 pm
Boiling wood breaks down its structure. You could see how much tannin it releases by soaking it in plain water for a while. If it doesn't release much or you're satisified with the color of the water, I'd bake it (remove any loose debris with a brush beforehand) for about half an hour at 350 degrees and let it cool. I wouldn't worry about it releasing salt, especially if it's been presoaked---some people use aquarium salt in the tank.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-