CO2 content formula?

[bttay]

Does anyone know the formula to calculate the ppm of CO2 with given pH and KH?

My tank has pH of 6.6-6.8. There is no corresponding column on the usual pH-KH chart that I can get more accurate readings.

Thanks.

[vinz]

Use Chuck Gadd's calculator somewhere in here. His formula is right under the calculator.

[bclee]

The formula I use:

CO2 (in mg/L) = 30328702.13 x KH x 10^(-pH)

BC

[bttay]

----------------
On 9/11/2003 2:32:03 PM

The formula I use:

CO2 (in mg/L) = 30328702.13 x KH x 10^(-pH)

BC
----------------

Thanks. Based on your formula, I have created a HTML page for it at:
http://pachome1.pacific.net.sg/~bttay/CO2.htm

Anybody wants an Excel version of it?