levels about 5000ppm they say can kill a person but not a plant.
Zandor Reviewed by Zandor on . can you have too much co2 well uaa can you cause i just let open 2 12 oz boddles of co2 becaus it will have no ventalation(cleening people are comming) and the 1000 watt light gets real hot so is tehre a possibalitdy of to much of it Rating: 5