Separate CO2 timer - does any one do this?
Based on pH. the CO2 in my tank varies from 10 ppm in the morning to 35 ppm at night. Right now I'm using the same timer as the lights, bit I'm thinking of using a separate timer due to the lag needed to get the levels up, maybe as much as 4-6 hours prior to lights on/off. Using the same timer, I have high levels for half the night, and low levels for half the day.