I have a nice 5x5 grow tent. But it costs so much to keep a heater going in it. I am only growing autos this time around…is it okay to keep the door open with the lights on. The tent is near a wood stove so its always pretty warm (am in VT). I’ll keep the humidity up. If I could keep the tent door open I think it would save quite a bit money. Any thoughts?
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As long as they get their dark time, you should be fine.
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I can’t think of a reason why it would be a problem
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I have used a 6 inch piece of flex at one of the pass through holes at the bottom of tent and run it to the area you are pulling the warm air from. Crank up exhaust fan to maintain negative pressure inside tent should pull the warm air right into the tent. Good luck 
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