"The formula used for this calculation is: CO2 (in PPM) = 3 * KH * 10( 7-pH ) where KH is Carbonate Hardness in degrees."
This is, of course, how I came to the conclusion that my CO2 level was 43.
I'm asking about bubble rates, as I stated, out of curiosity. I'm in no way implying that you can count bubbles and come to a conclusion on the amount of CO2 you have dissolved into solution.
However, I disagree that bpm is a completely useless figure to have. If you consider plant load, light and ferts, KH, pH, etc and then observe the bpm measurement, it may give you some idea of how efficient your dispersion method is.
Here's an example: I make a DIY internal reactor, run it for a week and take measurements. Then, I make a DIY external reactor, run it for a week and take measurements. If I try to match the ph for both of these reactors, then I can observe the bpm that it takes for each of these reactors to reach my desired ph and come to a pretty good conclusion as to which reactor is more efficient, as all other factors will have been equal.
Did you read my post before responding to it?