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Re: ph-KH-CO2

> Date: Sun, 16 Dec 2001 09:01:53 -0800
> From: "Dixon, Steven T. (BEn)" <stdixon at ben_bechtel.com>
> "Philippe wrote:
> > Where does the 3ppm concentration of CO2 in the bucket come from?
> >From the air."
> George will be quick to point out that this is a "myth."  While we do
> measure 2 - 3 ppm CO2 in our non-CO2 supplemented tank water, a
> portion comes from organic processes occurring in the tank which produce a
> small amount of CO2.  I forget how much George said actually comes from
> air, but I think it was something like half the amount we typically

If I remember right, the theoretical equilibrium value of CO2 in water at a
specifc temperature, sea level and 350 ppm in the air is 0.498 mg/l. This
varies with the three conditions, so your results WILL vary.

George Booth in Ft. Collins, CO (gbooth at frii dot com)
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