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Re: [APD] CO2 problems (??)

>>>By the way, correct me if I am wrong but KH 9 and pH 7.0 yields  about 27 
ppm of CO2.  Not 170.

I use the formula:  3*KH*(10^7-pH)

That means 3*9*(10^0) = 3*9*1 = 27 ppm.

Or am I  missing something?<<<
With a KH of 9 and a pH of 7 the CO2 would be 27.
Here is the formula    3*KH*10^(7-pH)

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