Curl up and brown spots hellllllppppo

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Donkinleezy

Member
Background
  • 4th week of flower
  • 6.5-6.8ph
  • Fox farm ocean forest soil
  • Fox farms big bloom, grow big and cha Ching
  • 72 degrees day and 68-69 at night. Humidity between 40-50
  • 7 gallon fabric pots
  • 2000 watt LEDS plat 23 inch from light
Issue: I fed them yesterday about 1 gallon each plant. As I normally have been. Out of nowhere just in last couple hours 1 plant out of the 7 I have is curling up with a bunch of brown spots. The leaves feel pretty dry. Some leaves curling up and some clawing down.
 

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Donkinleezy

Member
So it’s getting worse and I highered the light and did a flush. Why the brown little spots too. It’s curling up midway down the plant and curling down at bottom half.
 
Bignutes

Bignutes

Well-Known Member
Like was said too much light intensity and the "clawed" dark green leaves is from nitrogen toxicity.
 
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FlowerPower001

Member
If you are in the 4th week of flower you can stop the Grow Big. The leaves look like they have plenty of nitrogen and she's about done growing and will focus on growing and ripening the flowers.

Is your runoff ~6.5? Clawing leaves is often due to pH being out of order.
 
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Donkinleezy

Member
FlowerPower001 said:
If you are in the 4th week of flower you can stop the Grow Big. The leaves look like they have plenty of nitrogen and she's about done growing and will focus on growing and ripening the flowers.

Is your runoff ~6.5? Clawing leaves is often due to pH being out of order.
Click to expand...
Sorry I meant big bloom. Runoff is 6.3-6.5.
What would the orange and clawing up then be?
 
TreeFarmerCharlie

TreeFarmerCharlie

Well-Known Member
I’m curious of what those lights are, and what they actually draw, because usually when you hear “2000W”, and they are blurples, they wouldn’t cause light damage from 23” like that. It looks like you’ve overdone the Ni, possibly caused lockout (brown spots from lack of calcium), and perhaps that made it more easily damaged from the light?
 
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Donkinleezy

Member
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Budzbuddha

Budzbuddha

Well-Known Member
A few things ....
N Tox ... nitro too high in bloom ... buds will be smaller and or deformed
Add calmag ( necessary evil for led / blurple grows )
Light is no where near 2000w much less 400w draw ( check with Killawatt plug )
Curl up leaf means plant is having issues trying to keep moisture in leaf ( heat /stress / temps )

Lastly .... Flushing does nothing
 
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Donkinleezy

Member
Budzbuddha said:
A few things ....
N Tox ... nitro too high in bloom ... buds will be smaller and or deformed
Add calmag ( necessary evil for led / blurple grows )
Light is no where near 2000w much less 400w draw ( check with Killawatt plug )
Curl up leaf means plant is having issues trying to keep moisture in leaf ( heat /stress / temps )

Lastly .... Flushing does nothing
Click to expand...
So I’m sure what ur recommending here. Seems like statements but I’m not sure. What’s your recommendation
 
TreeFarmerCharlie

TreeFarmerCharlie

Well-Known Member
The seller needs to learn math. They claim the veg lights draw 210W, the flower lights draw 130W, and then say it compares to a 2,000W bulb while only consuming 400W. 210W + 130W = 340W
 
323cheezy

323cheezy

Well-Known Member
Donkinleezy said:
So I’m sure what ur recommending here. Seems like statements but I’m not sure. What’s your recommendation
Click to expand...
bro that’s a good prognosis ... what you mean what do I do the damage is done done .... prevention is key. Spots look like nute toxicity. And top looks heat burned . Maybe fan burn ., Other than that it’s not too bad. Fox farm are very Ol school nutrients. Get a calcium based organic their more forgiving.
 
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Budzbuddha

Budzbuddha

Well-Known Member
Yes .. adjust ph from 6.2 to 6.5 to allow calmag to temper the spotting, it is a common issue when running blurple panels.
Led grows often have host medium cooler than other light systems like HPS which introduces more ambient heat and IR that led panels don’t do , which affect transpiration. Raising interior temps to a stable 80° + and spreading watering out between will compensate.

Not the end of the world , you are merely stopping the progression . Leaves will not go back to normal , you are just putting the brakes on it. Definitely STOP using high nitro in feed. I would do ONLY WATER for bit so plant can consume excess , then later pick up with straight bloom only feed.
 
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