chewberto Well-Known Member Dec 2, 2012 #1 I am wondering does there need to be a certain amount of co2 in the air while the plants are in the dark periods since they don't use any? does the air need to be exchanged if i have a dehumidifier?
I am wondering does there need to be a certain amount of co2 in the air while the plants are in the dark periods since they don't use any? does the air need to be exchanged if i have a dehumidifier?
