Fans? How much wind?

AndromedaM31

AndromedaM31

Active Member
2x4 scrog set up, white widow.
I'm wondering how much wind I should have blowing on them. I dont want to end up wilting them with too much wind, but I definitely want to make sure they are getting enough airflow.
I have 2 computer fans below on the flow blowing on each side of tent, and one 6" fan hanging from the ceiling blowing mostly upwards.
I planned to either add another computer fan blowing across the canopy, or to just angle the one up top so that it blows across them more
 

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StareCase

StareCase

Well-Known Member
What you want is gentle air flow around the bottoms of the plants to help provide air to the substrate and lower portions of the plant - and a not so gentle airflow around the canopy top to keep it shimmying and help strengthen branches & stems. .

I have a 7.5" fan blowing across the bottom of the tent, also a 2' x 4', and two 6" clip-ons attached to kitty-corner poles. The clip-on attached to the left pole is higher than the one attached to the right. All three fans are pointed in the same direction but with each one being on different levels, it creates a good one directional swirl throughout the tent.

I am not sure that computer exhaust fans will generate enough good swirl - especially as the girls grow up and get real fat. I recommend you start with three 6" fans and get that air gently moving. You'll be glad you did.
 
StareCase

StareCase

Well-Known Member
Whew! Glad to know.

:blsmoke:

Cause I actually did try to step up the wind at one time and caused a lot of the leaves to get wind burn.
 
AndromedaM31

AndromedaM31

Active Member
StareCase said:
What you want is gentle air flow around the bottoms of the plants to help provide air to the substrate and lower portions of the plant - and a not so gentle airflow around the canopy top to keep it shimmying and help strengthen branches & stems. .

I have a 7.5" fan blowing across the bottom of the tent, also a 2' x 4', and two 6" clip-ons attached to kitty-corner poles. The clip-on attached to the left pole is higher than the one attached to the right. All three fans are pointed in the same direction but with each one being on different levels, it creates a good one directional swirl throughout the tent.

I am not sure that computer exhaust fans will generate enough good swirl - especially as the girls grow up and get real fat. I recommend you start with three 6" fans and get that air gently moving. You'll be glad you did.
Click to expand...
Thanks man!
Yeah I've been wanting more airflow in there. I've just been worried about wind burn or any other related problems. Later when the lights turn on I'll definitely be adding some fans in there
 
FlyHigh589

FlyHigh589

Well-Known Member
AndromedaM31 said:
Thanks man!
Yeah I've been wanting more airflow in there. I've just been worried about wind burn or any other related problems. Later when the lights turn on I'll definitely be adding some fans in there
Click to expand...
keep the fans oscillating to greatly reduce the chance of the leaves getting dried and crispy
 
AndromedaM31

AndromedaM31

Active Member
FlyHigh589 said:
keep the fans oscillating to greatly reduce the chance of the leaves getting dried and crispy
Click to expand...
Man I wish I had some small oscillating ones. Well I had one but I tore it apart trying to rig it up to a different motor cause the thing weighed like 15 pounds lol, and well... it didnt work out.
I mean, I could throw a bunch of these computer fans on timers and have a different one blowing every 30 minutes or so
 
bleak

bleak

Well-Known Member
Go for an oscillating fan, something that moves back and forth. The plants only get a blast every 5-10 seconds, and the fan also hits the areas to the sides, stopping any stale pockets of air forming in the growspace. You want to keep the air moving, but avoid having fans pointed directly at plants 24/7. Too much continuous wind causes excess perspiration/water-use, which can lead to all kinds of other issues as a result.

I'm using this $23 oscillating box fan hung in my tent, and it works like a charm. These are much better than the pedestal or clip-on fans IMO.

 
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