Can you over ventilate your grow box??

TheGardenMan

TheGardenMan

Dea, FBI, ATF MuthaFucker
My box is 3'x2'x1' and im using 2 27watt cfl's i was thinking id put two fans as exhaust and 1 fan to suck air in the box?? any advice? or 2 and 2.
 
t0k3s

t0k3s

Well-Known Member
howbout you put 2 intakes 2 outakes and use like 6 cfls in 6500k spectrum and have a fan that blows on the plants besides intakes and out takes and your set.
 
ez_growin

ez_growin

Well-Known Member
TheGardenMan said:
My box is 3'x2'x1' and im using 2 27watt cfl's i was thinking id put two fans as exhaust and 1 fan to suck air in the box?? any advice? or 2 and 2.
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Over ventalating I think is possible.. I had cooling issues and I think over ventalated because my humidity dropped to like 18-20% with all the air flowing I think it dried the air....I added some containers of water and humidity back to 40-58%...just an FYI.
 
gotot

gotot

Well-Known Member
TheGardenMan said:
My box is 3'x2'x1' and im using 2 27watt cfl's i was thinking id put two fans as exhaust and 1 fan to suck air in the box?? any advice? or 2 and 2.
Click to expand...
the only thing over-ventilation does is force your plants to grow stronger stems so they have more resistance against the wind. if your flowering, you dont want your plants focusing on making stronger stems. it doesn't sound like you'll have a problem thou just make sure the intake fans aen't blowing your plants all crazy, if they're blowing around more than 2 inches in diameter its probably too windy . 2 27 watt cfls isn't enough for your growroom
 
Z

zwh02

Well-Known Member
Sirgreggins said:
Well unless you're giving them more ventilation than the earth gives outdoors plants you should have any problems..
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Haha. That made me picture a MJ grow box with 200 mph winds ripping through it, and a gigantic trunk of a plant sitting in the middle.
 
gotot

gotot

Well-Known Member
zwh02 said:
Haha. That made me picture a MJ grow box with 200 mph winds ripping through it, and a gigantic trunk of a plant sitting in the middle.
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lol yea you probably dont want hurricane level 3 winds on the rictor scale blowing your plants around
 
t0k3s

t0k3s

Well-Known Member
gotot said:
the only thing over-ventilation does is force your plants to grow stronger stems so they have more resistance against the wind. if your flowering, you dont want your plants focusing on making stronger stems. it doesn't sound like you'll have a problem thou just make sure the intake fans aen't blowing your plants all crazy, if they're blowing around more than 2 inches in diameter its probably too windy . 2 27 watt cfls isn't enough for your growroom
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it also drys the air out affecting the humidity levels which in turn affects the plant:joint:
 
laadback37

laadback37

Active Member
Maybe it would be better with just the 2 exhaust fans, and then a passive intake (no fan, just a hole at the bottom)...
 
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