make sure that the intake has some kind of filter on it,CO2 is heavier than air ,so you'll get a maximum of it using your planned method,a very good idea you have....bonbon
bonbon Reviewed by bonbon on . co2??? Not really up on all this grow room stuff yet....How do you increase the co2 in a room???....always thought good ventilation was the best you could do. TANX>>>>>>>>>>>>>. Rating: 5