Heat STress problems/solutions

gotot

gotot

Well-Known Member
im growing in a closet about 12 square feet. i have a 400w mh light and the temp will not go below 89-92 range, humidity 50% give or take. i have one box fan blowing air in, another on top of the closet shelf blowing air downward and another on top of the shelf blowing air out the closet. Help?
 
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helmoid

Active Member
gotot said:
im growing in a closet about 12 square feet. i have a 400w mh light and the temp will not go below 89-92 range, humidity 50% give or take. i have one box fan blowing air in, another on top of the closet shelf blowing air downward and another on top of the shelf blowing air out the closet. Help?
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Well, if you cant get the temp down at all, you can supplement CO2 which will help the plants tolerate a higher temp. It really depends on your budget though.

Or get some stronger fans with a higher CFM rating.
 
gotot

gotot

Well-Known Member
helmoid said:
Well, if you cant get the temp down at all, you can supplement CO2 which will help the plants tolerate a higher temp. It really depends on your budget though.

Or get some stronger fans with a higher CFM rating.
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word i got a co2 tank and i put it on .2 even though that's really high for my space(.2 is meant for 800 squared centimeters, i have 48(roughly 15 squared feet))
 
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backwoodzbudz

Member
Try a different fan setup. Heat rises, so I would put the top two fans blowing out, with the box fan at the bottom blowing in. I'm just a noob though. But that's my opinion
 
univativegrower

univativegrower

Member
Noob here as well, but having a higher cfm vent fan definitely seems to help control the temperature in my room. A good exhaust fan is much more effective than more intake fans. Active air makes fairly cheap in-line fans
 
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chronicis

Member
univativegrower said:
Noob here as well, but having a higher cfm vent fan definitely seems to help control the temperature in my room. A good exhaust fan is much more effective than more intake fans. Active air makes fairly cheap in-line fans
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As univativegrower said, good exhaust is needed. I have 600w metal halide lamp and I use a single 240 CFM fan to cool it. my roon is 8 square feet, and temps stay at 79F when the light is on.
 
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