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No exhaust fans are on, one is installed and controlled by the Co2 controller but never gets to 800ppm which is the default level for the fan to kick in . The light has duct intake and exhaust from outside room. I have the controller sensor plus two other Co2 monitors which shows no increase...

Was planning on cooling with a portable AC but haven’t got to that yet since the Co2 testing failed. I have two different meters plus the one included with the controller, my seals aren’t 100% but it should be good enough to see levels rise before it dissipates. I’m completely baffled

No AC unit, caulk and gorilla tape all corners, light hood vented From outside both ends, no air transfer

I’ve been growing for about 7 years mostly in tents. I’ve decided to try Co2 for the first time, started with mushroom bags and a Co2 meter but couldn’t get a reading above 500ppm unless the meter was right on top of the vent hole, tried a mushroom bucket with same results and figured the meter...

I’ve been growing for about 7 years mostly in tents. I’ve decided to try Co2 for the first time, started with mushroom bags and a Co2 meter but couldn’t get a reading above 500ppm unless the meter was right on top of the vent hole, tried a mushroom bucket with same results and figured the meter...