Help? Don't know what to do

[Eugor]

Hello, I have four autoflowers sitting in 3 gallon pots. Anyways only one of them has the problem and I can't figure out why.

Strains:
x2 Blueberry Kush
x2 Tangerine Dream


I feed and water them at a PH of 6.5 to 6.8
They're on a 20/4 light/dark cycle,

Temperature is 22c and Humidity is 50%

Its only happening near the top but it's not happening to the other plants. I already raised the lights so I don't think it's that.
Third picture is of a plant sitting right next to the one with the canoed leaves, totally unaffected.



Any help is greatly appreciated.

 

[Eugor]

 

[Chris Scorpio]

Didn't give us much info

Light stress, too close
Nute strength, too much N
Fan blowing on it
Watering issues

How to Ask for Grow Support

It is VERY hard to help diagnose plant problems if we don't have all the required information. EXTREMELY IMPORTANT The ONLY way to receive optimal feedback and support is to provide photos! Photo Gallery Guide - How to Resize, Upload & Post Photos REQUIRED READING FOR ALL NEW GROWERS! How to...

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[Greenlizard]

Looks like light stress but as Chris said we need more info.

 

[Jamfen]

The curling leaves suggests it light/heat stress , specially if it is just happening on top leaves

 

[Eugor]

Didn't give us much info

Light stress, too close
Nute strength, too much N
Fan blowing on it
Watering issues

How to Ask for Grow Support

It is VERY hard to help diagnose plant problems if we don't have all the required information. EXTREMELY IMPORTANT The ONLY way to receive optimal feedback and support is to provide photos! Photo Gallery Guide - How to Resize, Upload & Post Photos REQUIRED READING FOR ALL NEW GROWERS! How to...

www.420magazine.com

Strain - Blueberry kush
# of Plants - 4 but only 1 affected
Grow Type - Soilless
Grow Stage - Vegetative
Pot Size - 3 Gallon
Lights - 300x6 Watt LED Cob Grow Light
Nutrients - Dutch Nutrients Gro-A and Gro-B as well as Growth Burst, 1/4 stength.
Medium - 20% Perlite 80% Mycorrhizae

PH - 6.5 - 6.8
RH - 50%
Room Temperature 22c or 71f

Problem: My leaves are curling up.

 

[Eugor]

Looks like light stress but as Chris said we need more info.

The curling leaves suggests it light/heat stress , specially if it is just happening on top leaves

The consensus already sounds like light stress but I have taller, much taller plants and even one of the same strain that are not reacting this way. So confusing!

The plant on the front right is the one in question.

 

[Jamfen]

I had heat / light issues wih my northern lights and red russian xxl .. removed affected leaves , raised lights , tied back branches and alls well now ... I could have corrected problem sooner but was looking too much into deficiencys to realise what was going on

 

[Jamfen]

That was just top leaves on the right with the healthier leaves on left that were just below top ones

 

[Eugor]

That was just top leaves on the right with the healthier leaves on left that were just below top ones

If it is light stress, will the leaves recover and stop curling? Or is it permanent damage?

 

[Jamfen]

The consensus already sounds like light stress but I have taller, much taller plants and even one of the same strain that are not reacting this way. So confusing!

The plant on the front right is the one in question.

But do you have yours on a 20/4 cycle as Eugor does ?

 

[Jamfen]

If it is light stress, will the leaves recover and stop curling? Or is it permanent damage?

Yes as long as you dont let them burn as mine did

 

[Eugor]

But do you have yours on a 20/4 cycle as Eugor does ?

Well I am Eugor so yes lol. Though I am considering 18/6 now. What do you think?

 

[Jamfen]

Well I am Eugor so yes lol. Though I am considering 18/6 now. What do you think?

Lol .... didnt read it properly .. what a tool ..lol

 

[Chris Scorpio]

All pheno of the same strain will not respond the same

Because one does, dosent mean anything if others don't

How far above is the lights? Maybe move this one to a different spot

Soiless, as in DWC? Are they all in different buckets, or one big tub
If different could be some water issues as well

 

[Eugor]

All pheno of the same strain will not respond the same

Because one does, dosent mean anything if others don't

How far above is the lights? Maybe move this one to a different spot

Soiless, as in DWC? Are they all in different buckets, or one big tub
If different could be some water issues as well

Soilless as in Pro Mix Mycorrhizae, not real soil. Each plant has their own separate pot. I can't for the life of me find my measuring tape, I did move the light up after 2 days of observing this curling of the leaves. I'm going to assume you guys are right and it's light stress.

 

[Chris Scorpio]

Probably should be around 20" from tops, don't have cobs, but usually white lights are at that distance

 

[Eugor]

Probably should be around 20" from tops, don't have cobs, but usually white lights are at that distance

thanks

 

[Budcheeks]

When i get somthing im not sure of and i know my ph and environment is all good i just transplant to a bigger pot take a look at roits and had great success with it but that me