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07-03-2009, 11:12 AM
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| Novice Gardener Join Date: Mar 2009 Location: in a hollow tree
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I'm trying to set up a 99% closed room... with the only air exchange through the air tight hoods. Unfortunately, I've discovered that the active air portable a/c makes so much negative pressure I cannot close the zippers all the way. I don't understand. Where is the air going that the a'c is sucking from the outside? It can't be through the ducting or the smell would go through directly. I'm confused... anyone here have experience with this? Thanks!  | ||
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Grow jardin with portable a/c=negative pressure????  |
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