can someone help me ive done hours of research and still have no definite answer. i have a current grow room and i plan on re venting my furnace into my grow room then venting my grow room out the chimney so i can gain higher levels of co2. from what i understand is as long as ur furnace is burning a blue flame it is co2 not co. will there still be levels of co? and will it be enough to hurt the plants ?? has anyone done this before?? please help
furnace co2
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