From a fellow grower: My most important question would be: what’s the best possible way to control ventilation in a closet grow situation? Its about 9 ft tall, 8 ft in length, and maybe only 3 ft wide? I know the Bible recommended a larger fan to simulate a windy environment, but would that also take care of balancing the heat from the light?
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Some lights put off more heat than others. I would recommend exhaust fan ,Pulling out hot stale air an replenish with fresh air.
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When I grew in a closet, I cut a hole in the ceiling and and installed an exhaust fan and ducting to move the hot air to the attic. Only possible if you own the house though. Otherwise use fans to push air out as best as possible.
Those are really two different fans. You should at least have an exhaust fan to remove warm co2 depleted air and replace with fresh air. Then at least one fan circulating the air within the space. Bigger spaces will require larger fans or multiple fans for one or both.
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