I've been curious about this, too. I used to have some that
discolored the water like my wellaby wood - so it's a possibility.
I'm sure there are different qualities of petrified wood, though. You
could put it in a bucket with a little water and take a ph reading in
a week. Let us know the results!
Cris

On Sat, 20 Sep 2003 21:33:11 GMT, "Boris" wrote:

I have some petrified wood which I bought years ago and was thinking of
putting it in my planted tank.

From what I remember, it should not raise PH. I did a few searches on Google
and had some conflicting reports - but most suggested it is PH neutral.

Anyone using it in their planted tank?
cheers,
Boris