[APD] CO2 Meters, KH, PH...

["Jim Miller" <jim at jtmiller_com>]

I'm under the impression that automatic CO2 regulators are really measuring
pH rather than CO2 concentration. If that is correct then blindling relying
on them without periodically measuring KH would lead to over/under CO2
concentrations.

Am I correct?

tnx
jtm


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