Got my intake fan today. Decided to seal up everything I’ve had open because of temp issues. The thing is blowing up like a balloon? Do I need that Velcro flap open? Or is it just supposed to be like a balloon? I feel like it’s gonna stretch the zippers.
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That’s what happens when your intake fan is pushing in more air than the exhaust fan is pulling out. I’ve never used an intake fan, never felt the need.
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What exhaust fan 
was only going to get one of those if this didn’t stabalize my temps. Do I need one or can I just used the negative pressure through the flap
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Up til now suckers just been wide open because lights are way to damn hot and I live in Florida which isn’t helping. They are only two weeks old so no light worries
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I’d use your new intake fan as an exhaust fan and leave one of the flaps open.
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Okay thanks for the input.
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Gonna order another fan I NEED that cool air coming in 
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And when you order the new fan make sure you put it exhausting out of the top to suck in cooler from the bottom cold air sinks.
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Funny you mention that. Was just thinking about that. How am I suspending an inline fan from these poles.
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Usually there’s some crossbars that you can hang the fan from.
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Yeah I have my lights on those but…the fan it just like rounded off of are you hanging from the screw support things on the side strattked between two diff bars?
Why is your fan blowing air into the tent from the top?
It should be reversed so it’s sucking air out of the top. And have an inlet for incoming cooler air. This should help our temperatures
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Ok so I couldn’t get below 92 with the tent sealed up. Even with a six inch fan mounted in the top blowing air out one of the exhaust holes. I used the strings from the home to affix it tightly around the fan. I think it was decent exhaust. So now I have the tube you see going out the top and into the AC vent itself. Removed cover shoved it up in there taped it all air tight. This setup I hope to keep. Think I need it. Closet is against outter corner of home that gets baked all day long by Florida sun…I worded that wrong. I would hit 92 and freak out and open it all back up again. It would surely go higher.
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Thanks for the help. Gonna keep what I have and ordered the matching fan for exhaust!
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Also I missed that comment. I’m getting the air from the ceiling of the home but the fan itself is on floor of the tent on a box. My 8 ft tube would go no further
There are pros and cons to positive and negative pressure ventilation…
Forcing cool air in at the bottom and allowing it to exhaust out the top on its own will creative positive pressure inside your tent, which could help keep out contaminants and pests because every opening will be blowing air, but it’s less effective at evacuating hot air because it’s going to cause the air to swirl and mix before anything is forced out.
Pulling the hot air out the top will cause negative pressure, so anything not sealed will suck air, but since you are pulling from the hottest part of the tent it’s more effective for reducing temps.
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The box contains a Terra Bloom fan. Flex duct connected to the fan runs into the tent.
An intake fan will suck all sorts of goodies into the tent so it is a good idea to. use some sort of pre filter. The horticontrol is more than is needed. Any sort of polyester filter material will work
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Thank you! Didn’t think of this.
Excellent suggestion. I’ve sucked in my fair share of fuzzies into my tent, and pre-filter. You can purchase blanket filters to cut any size on an intake.
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