CO2 period

[gum]

bros with injected CO2 do u on it 24/7?

i do have a timer and solenoid. is it better to have constant PH value in the tank or to off the CO2 during the night? (not talking bout cost of re-fill)

i read about in some forums inconsistent CO2 will sometimes cause algaes problems.

[milk_vanilla]

Incosistent co2 during photoperiod, yes.
During non photoperiod, plants don't care to co2 level existence.