dialing CO2 can be simplified if you keep your equipment and layout simple like in the 2hr aquarist setup above. Essentially there are only 2 variables:
(1) When to turn on/off CO2
(2) How much CO2.
And frankly, there is only so much you can do with those 2 variables. After dialing in 1.5bps into my Qanvee diffuser (different bubble counters have different bubble sizes) and starting CO2 3 hours before lights on, my focus had to shift to getting adequate flow of CO2 enriched water to the substrate level. which is probably the subject matter of another guide