Hooked fan leaves?

Hi everybody,

I am new here and have only been growing for around a year. Love the forum.

I have been trying to identify what is happening in the attached pictures. I am looking at the hooked leaves where the fan leaves turn down at a 90 degree angle. I thought maybe Nitrogen deficiency, but I don't think that is it. This was very dominant on the plant as she transitioned to flowering and then she doubled in size over her sisters. Buds are very stringy - big long pistols but not much under there. She just started developing trichomes about 10 days ago. At 60+ days from seed, she should be further along so I am wondering if what is/was happening to the leaves is causing the plant to under develop.

I also considered that it was to close to a fan so I moved it
Maybe light burn? Top cola is much closer than the canopy

As soon as she started to flower, most of the leaves turned down and curled under like these. It has recently cropped up on a younger lady on newer leaves.

Any suggestions?

Thanks - Androoi

Miracle Grow Performance Organics soil
Watered lightly each day. Same schedule for all.
18-6 light schedule
Growing indoors
Given 1/4 tsp on Flower fuel
Flowering stage

Nitrogen tox imo the infamous claw

I wondered that too but the leaves are showing more of a deficiency with yellowing leaves and red stems from the bottom up. I don't mind that because she's should be a few weeks away from harvest. Can she be deficient and toxic at the same time?

Why do you think toxicity?

Thanks for the reply.

You can see some nute burn on the tips...the claw is caused by too high PPMs in general and too much nitrogen. It's super common. If you are seeing yellow lower down it might be a mag deficiency, but we'd need to see lots more pics in normal light. Red stems can indicate mag deficiency too, but also other things.

Androoi said:

I wondered that too but the leaves are showing more of a deficiency with yellowing leaves and red stems from the bottom up. I don't mind that because she's should be a few weeks away from harvest. Can she be deficient and toxic at the same time?

Why do you think toxicity?

Thanks for the reply.

Click to expand...

Ya they can show both at the same time

Rurumo said:

You can see some nute burn on the tips...the claw is caused by too high PPMs in general and too much nitrogen. It's super common. If you are seeing yellow lower down it might be a mag deficiency, but we'd need to see lots more pics in normal light. Red stems can indicate mag deficiency too, but also other things.

Click to expand...

Yep red stems seem to be a combination of magnesium and sulfur deficiency.

Sade said:

Yep red stems seem to be a combination of magnesium and sulfur deficiency.

Click to expand...

Which go hand in hand when adding more P and K!

The tips can also hook downward with S def and also the classic red streaks in the stem!

Thank you for the deficiency poster. Needed that. Here is more info and more pics.

Candy Kush auto from GCS
600 watt LED. Light is 18inches from plant per manufacturer
seed popped 12/5
Veg began 12/28
Water PH has been 6.5 since the beginning

Her two sisters were grown in the same medium.

When the stretch started is when the leaves bent downward. Then she just kept stretching. At first I thought it was re-vegging but she ended up twice the height of her sisters. She is 40inches while her sisters were all 24 inches or less.

Flowers are light and airy where her sisters were all very dense and long. She should be in the final stretch so this is probably more about being able to identify this issue going forward rather than fixing it.


Here are more pictures under normal light

I appreciate your help! So Epsom Salt should help?

The claw don’t lie!