A better plan is that every 1.0 drop in pH = 30ppm CO2My PH with CO2 on is 6.0
Ph after sitting 24 hours my PH is 7.2
Just to make sure we are talking about the same chart : CO2/pH/KH table - Aquarium Plants - Barr Report
The way you use it is to go to the row that has your KH value, in this case KH=3, then go to the column that has your pH value, pH 6. The intersection of row-column gives a 90ppm (mg/L) CO2.
This might be an overestimation of your actual value depending on how sure you are that
1. the instrument you measured the pH is accurate and precise. Is it a new pH probe ? When was it last calibrated ? Colorimetric test ?
2. the KH value is largely from carbonates
3. the time and location of measurement are representative for a large part of the aquarium
Regardless, it seems to be enough CO2 and you should always observe the behaviour of fish/shrimps. You can double check with a dropchecker. You can assume the water after 24 is at equilibrium ~0.5ppm
Always from the tank.Are we measuring the KH from the tap or from the tank?:nerd:
Im afraid this calculation is mistaken.every 1.0 drop in pH = 30ppm CO2
7.2 - 6.0 = 1.2 x 30 = 36ppm/CO2