I'm sure the light/cooltube is not isolated from the growroom! air from the cooltube ducting system should intake freshair from outside the growroom and also exhaust hot air outside the growroom. that prevents hot air and odors from leaving the grow room!!!!
canadianhemperor Reviewed by canadianhemperor on . How do I test My Can 66 Carbon Filter to make sure im not getting a odor? I Just bought a Can 66 Carbon Filter and a can-fan 6inch ho 440 cfm and I tried to test it with cigarette smoke and I could smell it through the other end of the vent hose i have leading out of my room. Im using the filter in a 5 foot wide 7 foot tall by 9 foot long room. im running a 600 watt hps and a 400 watt hps with another fan pushing the heat out of the lights out of my grow room. the can filter and fan are connected together and forcing the air out of the room i have a switch hooked up Rating: 5