Black Curling Leaves..Any ideas?!

hans6875 · Nov 28, 2015

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!

Uzurpator · Nov 28, 2015

Looks like burn to me.

hans6875 · Nov 28, 2015

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 · Nov 28, 2015

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!

hans6875 · Nov 28, 2015

Thank you!!

Urbz · Nov 28, 2015

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

vostok · Nov 28, 2015

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. · Nov 29, 2015

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 · Nov 29, 2015

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

Black Curling Leaves..Any ideas?!

hans6875

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tropicalcannabispatient

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