So here's my advice, you want to be using a CGE. Controlled Grow Environment. You want your CO2 to be between 1200-1500 only during the day time, plants don't absorb CO2 at night. So your device should be on a timer to turn off when lights go off, perhaps the same timer as your lights. You are not supposed to exhaust out of the room, instead you have a carbon filter with a fan pulling the air through the filter inside of the room, and therefore scrubbing the room of all smell. If you have an air conditioner then that will be find for intaking fresh air, but the thing is you don't need fresh air if you are using CO2. So essentially your plants breath CO2, use the lights to do photosynthesis, and they turn into huge monsters. Also, you should have an exhaust fan with a dimmer switch on it to air out the room before you go into work. Safe levels to breath are below 700 or so. Normal air is 300-400..... Hope this helps!
