He also likes to have CO2-rich air pushed into his rooms via intake fans, with exhaust fans on the other end of the room pulling the CO2 through the plants.Most CGE growers use sensors to monitor air and other factors to ensure an ideal growing environment: 73-78?F (23-25?C) temperatures, 40-55% humidity, 1,500 ppm CO2, constant air flow and aeration, and scrubbed air.Some sensors can be equipped