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Reload this Page Building a GROW BOX - Where to position the EXHAUST and INCOMING VENT
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Old 11-07-2009, 12:02 PM
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Default Building a GROW BOX - Where to position the EXHAUST and INCOMING VENT
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Not sure if I'll have two fans. But one definitely for the exhaust. If i have a VENT should it be below my plants near the tubs (going hydro) or should it be on the base of the stalks? near the middle? Should they be getting constant air? Should I make it in the back of the box so it's it's hitting the center and dispersing?


As for the exhaust should I place it by the lights? ABOVE the box? as heat rises?

not worried about heat mostly smell.
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Old 11-07-2009, 03:19 PM
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Not sure if I'll have two fans. But one definitely for the exhaust. If i have a VENT should it be below my plants near the tubs (going hydro) or should it be on the base of the stalks? near the middle? Should they be getting constant air? Should I make it in the back of the box so it's it's hitting the center and dispersing?


As for the exhaust should I place it by the lights? ABOVE the box? as heat rises?

not worried about heat mostly smell.
??? no opinions yet???
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Old 11-07-2009, 03:33 PM
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i use a grow box but if you using a big fan that rotates put it like in the general area not right on the plants that would hurt them. hope that helps.
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Old 11-07-2009, 04:01 PM
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... Just clarify - how big is this box?

Usually in a small set up ... 2 fans ... one pumping air in at floor level .. the other at roof / light level ... to suck the hot air out

Fan type depends on size of room?,type of light/power? etc ... please confirm
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Old 11-07-2009, 04:33 PM
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... Just clarify - how big is this box?

Usually in a small set up ... 2 fans ... one pumping air in at floor level .. the other at roof / light level ... to suck the hot air out

Fan type depends on size of room?,type of light/power? etc ... please confirm
i just started a new thread for this. but i don't know whether to have 1 or 2 fans.

the box will be about 1.5 feet long, 5.5 feet wide. and about 6 feet high?
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Old 11-07-2009, 04:45 PM
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i just started a new thread for this. but i don't know whether to have 1 or 2 fans.

the box will be about 1.5 feet long, 5.5 feet wide. and about 6 feet high?
Inlet Fan
http://cgi.ebay.com/BNEW-Axial-Fans-...#ht_602wt_1165

Outlet Fan
http://cgi.ebay.com/NEW-4-Inch-INLIN...item5d267d0409

It also depends in your outside temp ... what is your average daytime temp? ...
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Old 11-07-2009, 04:50 PM
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Dude ... you might wanna consider one of these ... they are pretty handy and save alot of man hours
http://cgi.ebay.com/48X-24-X-80-GROW...#ht_4071wt_939

Mark my words ... you need 2000mm/7ft height ... if you are running hydro
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Old 11-07-2009, 05:01 PM
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Inlet Fan
http://cgi.ebay.com/BNEW-Axial-Fans-...#ht_602wt_1165

Outlet Fan
http://cgi.ebay.com/NEW-4-Inch-INLIN...item5d267d0409

It also depends in your outside temp ... what is your average daytime temp? ...
i live in the northeast I expect it to get pretty damn chilly.
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Old 11-07-2009, 05:14 PM
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i live in the northeast I expect it to get pretty damn chilly.
My advice - run both fans during daylight hours
... once light goes off ... inlet fan can go off

Then just run the outlet fan every hour for 10-15mins ... during dark cycle
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Old 11-07-2009, 05:30 PM
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My advice - run both fans during daylight hours
... once light goes off ... inlet fan can go off

Then just run the outlet fan every hour for 10-15mins ... during dark cycle
thanks a lot man.

i'm still thinking if I want to build it myself or buy the tent. a lot cheaper to build myself i think....
 
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box, building, exhaust, grow, incoming, position, vent

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