What do you do with co2 at night?

HippieMan

Well-Known Member
I have a completely sealed growing room. I know plants don't utilize CO2 during the night cycle and that I shouldn't enrich during those times, but don't they need something to continue their processes?
As my room doesn't have any ventilation and won't be getting any new co2/oxygen from the outside, what am I suppose to do during the night time?
 
Top