The CO² is not in the exhaust. It's a by product of the blue flame. It falls down from the tip of the flame to the ground. CO² is lighter then the air so it will fall to the ground and fill the room from the bottom up.
Zandor Reviewed by Zandor on . CO2 from Nat gas??? ive read in the FAQs that extra CO2 is a really good way to get plants growing. i was wondering if the CO2 from burning Nat gas is a good way to get that extra lil kick. the reason i ask is cuz im starting a new grow cabnet in my closet that is right next to the water heater. i can duct the exhauast from the water heater into the cabnet then back out though the roof over the water heater. thata way i can get rid of the smell and give CO2. my cabnet is completely sealed, so im sure i wouldnt get Rating: 5