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> wondering if someone could help explain why water could have a PH of
> 7.4 and no measurable KH. I tried two differnt test kits, but I
> haven't ruled out a bad reading. If I add CO2 to this, will that be
Hopefully some of the real water chemistry experts will jump in here,
but I believe that without some buffering, the pH is meaningless, and
will change quickly and easily in the presence of any acid or base.
I would guess that adding CO2 will drop the pH very quickly and far.