Creative ideas for keeping grow tent cool?

burnnugs

burnnugs

Member
Hey guys, I'm looking for some ideas on how to keep my 2 x 4 x 5 grow tent cooler. I've been having to keep my tent open so there is better air exchange but I'd love to close the tent up while I'm out of the house. Right now there are 2 X 105w cfl and a "1000" watt morsen triple chip led light. The plants love the lights but I can tell they are dealing with a little bit of heat stress. The temperature is usually between 76-86 but it's so hard to keep the temp down. I have an inline fan which I don't use because the tent is usually open. I usually have the AC blowing in the room and a window dual fan bringing more cold air into the room but it's not enough. Any ideas would be helpful!
 
burnnugs

burnnugs

Member
n0thing said:
Start by using you inline fan. You can't cool a tent without any air exchange, that's the whole point of ventilation - exchanging hot air with cool air.
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With the tent closed and inline fan running the temperature near the plants stays high at about 85 F, and running an inline fan with the tent open is not that efficient. I have a ceiling fan moving air and a window fan bringing in fresh air and enough fans in the tent while open to move the air.
 
N

n0thing

Well-Known Member
burnnugs said:
With the tent closed and inline fan running the temperature near the plants stays high at about 85 F, and running an inline fan with the tent open is not that efficient. I have a ceiling fan moving air and a window fan bringing in fresh air and enough fans in the tent while open to move the air.
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Where are you exhausting the air out? If you're just exhausting the hot air into the same room then you're only cycling the same air back into the tent. Exhaust the air outside the room, or outside the house entirely.
 
SPLFreak808

SPLFreak808

Well-Known Member
Is that window fan pulling air from outside? If so, take it down,close all the windows and let the a/c do the rest.

that led panel pulls 185w, it really shouldn't be hard to keep that area cool & I agree with installing the inline fan if you plan to close that tent up.
 
Dynamo626

Dynamo626

Well-Known Member
fyi 86 isn't that bad in florida it stays in the upper 80s to upper 90s for most of the growing season outside and the plants do fine. 86 may not be the 'sweet spot' but it shouldn't hurt them much. my guess is the cupping is most happening directly under the hot spot and is caused by the light intensity but then its hard to say when you have no pics up
 
coreywebster

coreywebster

Well-Known Member
burnnugs

burnnugs

Member
Dynamo626 said:
fyi 86 isn't that bad in florida it stays in the upper 80s to upper 90s for most of the growing season outside and the plants do fine. 86 may not be the 'sweet spot' but it shouldn't hurt them much. my guess is the cupping is most happening directly under the hot spot and is caused by the light intensity but then its hard to say when you have no pics up
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This is cupping that im dealing with. But if you think that around 85 is ok then I should be good.
 
burnnugs

burnnugs

Member
n0thing said:
Where are you exhausting the air out? If you're just exhausting the hot air into the same room then you're only cycling the same air back into the tent. Exhaust the air outside the room, or outside the house entirely.
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i have my exhaust going to my attic

SPLFreak808 said:
Is that window fan pulling air from outside? If so, take it down,close all the windows and let the a/c do the rest.

that led panel pulls 185w, it really shouldn't be hard to keep that area cool & I agree with installing the inline fan if you plan to close that tent up.
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thats what i was thinking when i bought everything but i closed the tent up today because the air temperature finally dropped 10 degrees

coreywebster said:
How do you know that? How are you measuring temps near plants?
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And get your extraction fan in use. Your growing weed, don't waste time trying to cut corners.
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i read something very similar to this but thanks. i definitely did my research before coming to you guys for help. and trust me i have cut no corners on this grow.

Anyways thanks for all your help.
 
burnnugs

burnnugs

Member


Anyways heres a pic of my babies at 2 weeks(tuesday). Today they are like 30% larger than they were tuesday. they are heavyweight fast and vast auto and they are growing fast.
 
Dynamo626

Dynamo626

Well-Known Member
sunny747 said:
I've found that having a fan blowing across my lights actually heats up the space. It prevents the hot air from rising.
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Havent found that at all. If its in a sealed area there is ac to take care of heat. The hottest air is going to be closest to the lamp with a fan it pushes the hottest air away. What replaces it? Cooler air!. In a tent or vented area the ventelation should be matched to the area or the carbon filter wont get all the scent. You are exchanging all the air in the tent at least once a min. As long as the air is being pulled out the top and the fresh air is comming in the bottom. The heat dosnt have to rise on its own its being sucked out.
 
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