running co2 with lights off ?

[Aquattro]

CO2 for what?
Ca reactor?

[cityreefer]

nope Co2 pressurized for planted tank

[Corbin]

back in my planted days, i never turned it off.

I'm running mine on a PH controller and i have it turned off at night. No point having it running at night.

[sphelps]

While I know very little regarding freshwater stuff I do now plants use CO2 through photosynthesis which also needs light. So you could certainly add at night but the plants will only use it during the day so you might find better results in terms of PH stability if you only inject during the daylight.

[Mega]

You don't need to run CO2 when the lights are off.

[StrikingMoose]

I don't run CO2 on any of my tanks at night. There's no point for it, fish won't mind PH swings I have some sensitive rams and they do just fine with a ph swing of 6.8-7.8 throughout the day/night cycle. Plants also switch their sugar production and PRODUCE co2 during the night