The Planted Tank Forum - View Single Post - Calculating Co2 levels
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post #2 of (permalink) Old 01-17-2003, 10:54 PM
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Join Date: Oct 2002
Location: Minneapolis, MN
Posts: 859
3.6 x KH (in degrees) x 10^(7-pH) is the formula to use. Example pH=7, KH=5. 3.6 x 5 x 10 ^ (7-7) so you would have about 17 ppm CO2.


Tank in transition! 55 gallons, hard water.
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