JACKMAYOFFER
Well-Known Member
Plants do not use co2 at night the room has no in or out vents it is totally sealed.There is no outside air that is brought in .I do use a xl air scrubber to clean the air ...how does a sealed room work ?
i know you give co2 when lights are on for their photosynthesis,but plants need to breath with 02 at nights, do you add o2 at nights or do you use a intake fan and a exhaust fan at nights to bring fresh air ?