Canoe leaves for no reason???

D

Dries

Member
Hey guys
This is a northerlight autoflower
12 days old

So it looks like he is showing symptons of head stress but the temperature has never been over 30°C(26°C on average). Could it be to much light ? I kept 250w hps at 40 centimeter. Is that to close ?
IMG_20161202_204235.jpg IMG_20161202_204225.jpg
 
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Tim Fox

Tim Fox

Well-Known Member
Dries said:
Hey guys
This is a northerlight autoflower
12 days old

So it looks like he is showing symptons of head stress but the temperature has never been over 30°C. Could it be to much light ? I kept 250w hps at 40 centimeter. Is that to close ?
View attachment 3844004 View attachment 3844006
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mine do the same thing with too much light, they get over it as they get stronger, your taco/ canoe is slight, if they fold all the way in, or start flipping over,, raise the light some,, it also tends to happen more with the KUSH strains
 
Tim Fox

Tim Fox

Well-Known Member
some people discuss "vapor pressure" when talking about canoe/taco,,, also upping the air circ helps
 
Tim Fox

Tim Fox

Well-Known Member
chchhazed said:
30 degrees Celsius at that age is a bit warm . Drop ya temp and it should come right .
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had to put 30 cel into google,, 86 degrees,, lol,, ya that is too hot, hahaha,,, i wish america would have converted to metric back in the 70's we almost did
 
idfuckmyplants

idfuckmyplants

Well-Known Member
Is that tin-foil for a reflective ? Room could be at 30 but that reflective surface could be creating hot spots ?

Could be wrong lol
 
D

Dries

Member
No temp's are around 26°C on average when i put my termometer next to the leaves. I hung my lamp at 60 cm just now.
 
D

Dries

Member
Tim Fox said:
your getting lots of good advice here bro,, and tear down that foil
do you have a fan runnin
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Yes have a desktop fan shaking the plant a bit. The tin foil is the only thing that keeps that 250w from lighting up my room maybe il can replace with carboard later (cant afford a tent right now)
 
Tim Fox

Tim Fox

Well-Known Member
Dries said:
Yes have a desktop fan shaking the plant a bit. The tin foil is the only thing that keeps that 250w from lighting up my room maybe il can replace with carboard later (cant afford a tent right now)
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cardboard is fine,, get some thats white if you can, flat white reflects light very well,,, many of us just paint our walls
 
D

Dries

Member
MickFoster said:
I'm by no means an expert, but I think your humidity is too low for the temperature you're maintaining.
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Yeah i ment to say that i never had any heat waves. That could explaine why he has canoe leaves from heat stress. (never over 30°C)
 
D

Dries

Member
Tim Fox said:
harkens back to the "vapor pressure" its a deep subject,, google it sometime,, but be ready for a bunch of science,, lol
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MickFoster said:
I'm by no means an expert, but I think your humidity is too low for the temperature you're maintaining.
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It looks like you guys are right i look up vapor pressure difict. I found this thing. Tells us that temp's are to high for humidity. OR humidity is to low for my temp's. Thanks a lot. (Orange is what you need to have.)
vapor_pressure_deficit_relative_humidity_chart_small.jpg
 
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