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OfflineFugueRider
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What is the Upper Limit for Temps in a Grow Space
    #238513 - 06/11/09 01:37 AM (7 years, 5 months ago)

My grow space seems to have heated up from the upper eighties to the lower nineties (91 - 93) over the last few days. I have a fan blowing in there; my light has duct hooked up to it that sucks at least some of the heat it generates and expels it; and there is plenty of FAE getting there vis-a-vis some other duct work. I am leaving the windows in the basement open to that cooler air from the outside can fill the area where the duct work is sucking in FAE...and I still can't get the area below ninety. My plants look really great though, and are growing an inch a day or more now.

I am just unsure about this temperature matter and am wondering if the heat is to high, and if it will cause me unforeseen problems later on. If it is important, the strain is NYC Sour Diesel.


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OfflineTheShroomJew23
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Re: What is the Upper Limit for Temps in a Grow Space [Re: FugueRider]
    #238515 - 06/11/09 01:40 AM (7 years, 5 months ago)

Lower your temps,period. Buy a bigger fan for exhust and put the current inline fan on intake, have it dry from a fride if you have to. With that strain you should only provide the best.


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OfflineFugueRider
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Re: What is the Upper Limit for Temps in a Grow Space [Re: TheShroomJew23]
    #238565 - 06/11/09 08:39 AM (7 years, 5 months ago)

Ok - Any ideas on what is a good temperature range? I started flowering a few days ago.


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OfflineTheShroomJew23
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Re: What is the Upper Limit for Temps in a Grow Space [Re: FugueRider]
    #238592 - 06/11/09 01:06 PM (7 years, 5 months ago)

Good temp are low 80s high 70s with a spike of heat at mid day usually like up to 90 and night temps should be 10F less than day temp so like upper 60s low 70s.


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OfflineFugueRider
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Re: What is the Upper Limit for Temps in a Grow Space [Re: TheShroomJew23]
    #238685 - 06/11/09 07:57 PM (7 years, 5 months ago)

Quote:

TheShroomJew23 said:
Good temp are low 80s high 70s with a spike of heat at mid day usually like up to 90 and night temps should be 10F less than day temp so like upper 60s low 70s.





Cool Dude - It just turned out ot be my light. It was too close to the plants. I would like to keep it lower, but I had to raise it up about another foot and a half to get it cooled down. It is at 84 now with teh light on. I am in flower right now, so I ain't opening the room when it is off to verify. When I started the grow however, the temp was about 75 with no light in there....so I have no reason to believe it is different now.

Thanks for your thoughts.


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Offlinegrogan
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Re: What is the Upper Limit for Temps in a Grow Space [Re: FugueRider]
    #246598 - 07/07/09 02:39 AM (7 years, 4 months ago)

Just keep air flowing really well and you can get lights close. 80F's during the day is fine, night its best to get at least 10F degrees cooler.


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OfflinegeokillsA
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Re: What is the Upper Limit for Temps in a Grow Space [Re: grogan]
    #248709 - 07/12/09 03:20 PM (7 years, 4 months ago)

Quote:

grogan said:
Just keep air flowing really well and you can get lights close. 80F's during the day is fine, night its best to get at least 10F degrees cooler.




Agreed.  Some solid fans to cool the light, canopy, and to generally agitate air throughout the growspace... and you could get away with temps up to 95°F at the canopy and still keep your plant's colas within ~6" of the light.

I'm not saying you should shoot for temp's that high, because if it gets too hot for too long, you can stress/burn the plant to the point that new growth at the damaged sites will halt or be severely delayed.

If the OP's max temp at the canopy gets to 91 - 93°F, just make sure to maintain steady air turbulence to prevent hot spots from forming.


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