Black Curling Leaves..Any ideas?!

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hans6875

Member

• Nov 28, 2015

• #1

My plants are about 3.5 weeks in veg, alien OG, under 2 1000w lights. I had a spider mite issue which has since been resolved, but now I have some blacks spots and leaves curling. Also leaves have a somewhat waxy look. Can't quite figure out what this is. Please help!

 

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Uzurpator

New Member

• Nov 28, 2015

• #2

Looks like burn to me.

 

H

hans6875

Member

• Nov 28, 2015

• #3

I kinda thought the same but the lights are a good 5 foot off the plants. Maybe over water and they are choking out?

 

tropicalcannabispatient

Well-Known Member

• Nov 28, 2015

• #4

hans6875 said:

My plants are about 3.5 weeks in veg, alien OG, under 2 1000w lights. I had a spider mite issue which has since been resolved, but now I have some blacks spots and leaves curling. Also leaves have a somewhat waxy look. Can't quite figure out what this is. Please help!

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H

hans6875

Member

• Nov 28, 2015

• #5

Thank you!!

 

Urbz

Well-Known Member

• Nov 28, 2015

• #6

What's your nutrient regime? looks like burn, maybe too much N?

 

vostok

Well-Known Member

• Nov 28, 2015

• #7

Severe excess(N) way too green

time for a flush

but better is to pot up to the next size 15L/3usgallon

more perlite like 30% water well

and no more nutes until you see a positive response

good luck

 

PSUAGRO.

Well-Known Member

• Nov 29, 2015

• #8

What foliar applications did you use to "resolve" your mite issues?? miticides should be applied during lights off ............idk, maybe it's a N tox

 

hyroot

Well-Known Member

• Nov 29, 2015

• #9

Nitrogen tox and phos def. The black part is the phos def during veg. During flower it would be brown and crispy. The taco leaves and dark green veins and clawing is from too much nitrogen