Severe heat stress!??

Maine HomeGrown

Maine HomeGrown

Well-Known Member
So it's been about a week maybe even longer dealing with what seems to be heat stress. I have moved the fan in a different direction and also raised the light to just about its highest point as well as a box fan in the window still with no postitive results. I am currently doing an all auto flower grow and ironically my smallest plant (AKR) is the one with the worst heat stress or what seems to be "heat stress" while my tallest plant which is fairly close to the light has no signs of it at all which confuses me. I am wondering if it is just that and how I could go about handling this at this stage following my first try to correct this. Plants are all in flowering stage with a steady temp that stays between 70-85 degrees. It is fairly humid and warm feeling up here as they are located on the 3rd floor of my house with the door closed at all times so maybe a humidity problem? Much appreciated!
 

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hotrodharley

hotrodharley

Well-Known Member
Maine HomeGrown said:
So it's been about a week maybe even longer dealing with what seems to be heat stress. I have moved the fan in a different direction and also raised the light to just about its highest point as well as a box fan in the window still with no postitive results. I am currently doing an all auto flower grow and ironically my smallest plant (AKR) is the one with the worst heat stress or what seems to be "heat stress" while my tallest plant which is fairly close to the light has no signs of it at all which confuses me. I am wondering if it is just that and how I could go about handling this at this stage following my first try to correct this. Plants are all in flowering stage with a steady temp that stays between 70-85 degrees. It is fairly humid and warm feeling up here as they are located on the 3rd floor of my house with the door closed at all times so maybe a humidity problem? Much appreciated!
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You need to get air and a lot of it moving. Now.
 
T

T.H.Cammo

Well-Known Member
"with a steady temp that stays between 70-85 degrees."


With those temperatures, you can forget about heat stress!
 
spencer2121

spencer2121

Well-Known Member
Some strains need lower temps, it looks like heat stress, it's not a burn, over or under watering. Or low temps. So either his temps are getting hotter than 85°, or the strain likes cold temps.

85° is too hot it needs to stay under 78° I prefer my. Plants to be in the low 70°s
good luck heat sucks!
 
berad4guvna

berad4guvna

Well-Known Member
In Flower you need a 68 to 78 degrees. any higher your asking for trouble. do run your lights at night? and are you pulling any air out of you grow space. In with fresh air, and out with hot stale air. In line fans work the best.
 
B

beer316

New Member
im having the same problem. i got 85-95 F depending how hot it is outside. for now i keep my door open with a box fan on max blowing in cool air from the hallway which comes from the living room which has an ac. it helps but isnt perfect. if you can, turn your lights down with a dimmable ballast. i got my 600s down to 300ws. i also turned off my dehumidifier cause powdery mildew has a lot of trouble forming in high heat anyway. i just got a mini split ac for my room and am in the process of hooking it up. i really think it may be the way to go for a sealed room.
 
Maine HomeGrown

Maine HomeGrown

Well-Known Member
great info guys. last night i folded the legs on the table they were on and it is now flat on the ground with the ladies on top of it plus two fans pointed in their direction (removed the box fan from window as i have a constant breeze through the far window). the doorway is open with both windows (on on each end of the room) open as well. I am on the third floor so it does feel a little bit more stuffy in here but not too bad. I also live on the water so a constant breeze of fresh maine coastal air blows through. i'll see what it does but it is definitely makin me curious still but then again maybe it is the strain. it seems my steady temp is 80 degrees give or take a couple degrees with variable weather.
 
kcbennie

kcbennie

Active Member
You need an exhaust fan to suck the hot air out. The only thing that the box fan is doing is moving the hot air around. At the very least, go to Home Depot and get the strongest exhaust fan they have. You also will need to get fresh air into your room. That will get your temps down.
 
B

Bc God Bud

Member
These coments are not necessarily true. If it is 85 degrees because you have a couple of 1000 watters directly on some canopy colas this is perfectly fine. it's a damn plant, and it wants light more than it wants to be from 68-75 degrees. lower is bad yes, higher is not preffered, but that heat stress you are seeing will yield you more than someone with a good temp and a couple of cfl's
 
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