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Old 01-30-2007, 03:38 PM
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Default Heat in Grow Cabinet. What next?
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I have a grow cabinet from target. It is 69x26x18. I have a 4inch duct going into the bottom and a 4inch duct coming out the top. The top has an inline fan on it that flows 80 CFM. I am using a 400w HPS.

Yet, when I shut the doors it still is 84F! Do I need to install an intake fan, or get a smaller light?
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Old 01-30-2007, 03:45 PM
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you'll need a 2nd exhaust fan.
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Old 01-30-2007, 03:59 PM
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2nd exhaust on the same line?
different hole new fan?

What about an intake fan...this is in my closet...so Im trying to make it look as normal as possible
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Old 01-30-2007, 04:05 PM
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Also, my hood is relatively tight in the cabinet. But my exhuast is above the light. Maybe if I move it down below the light it would help?
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Old 01-30-2007, 04:11 PM
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You'll still need two, I would have one above, and one below, does your light have a glass shield?
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Old 01-30-2007, 04:14 PM
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No, I would like to look into getting one of those. Its holding at 82F right now. I may try putting it below and see what it does
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Old 01-30-2007, 04:26 PM
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82 is not too bad at all really. and you can defenitely improve on that with some tweaking. I use bathroom exhaust fans from homedepot, about $12.00 only.
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Old 01-30-2007, 04:31 PM
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82-84 is fine
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Old 01-30-2007, 11:42 PM
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Ok the final stats are in. 87F and 48% humidity. This is on a 80CFM fan.

Im contemplating going to home depot and getting a 6inch or 8 inch inline fan. (The 6 inch moves 160CFM) Do you think doubling the amount of air going down will bring it down 7F degrees?
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Old 01-31-2007, 06:09 PM
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New Stats: 8inch inline fan 500CFM

Testing right now. Already up to 78F
 
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