Black leaves?

Hello, does anyone know what is turning the leaves black on my Gorilla Glue 4 by ILGM plant? It is about 8 weeks into flower. It is grown under Spider Farmer 4000 LED lights with GH Flora Nova Nutrients dosed at 1 tsp/gallon (half strength). Any insight would be greatly appreciated. Thank4C45128E-8276-45F4-979E-CBBBD394C915.jpeg3F791682-BF44-4063-90C7-CC725378DFF0.jpeg you
 
How cold we talking? The tent gets down to 60 or so at night.
@Wattzup- I see that. Wondering if it’s just a crappy bean. The rest of the plants are thriving under the same conditions
 

MY OWN DANK

Well-Known Member
Pretty leaves...I'd be salty abt the buds tho that doesn't look like any GG4 I've ever seen...
Yeah I would never buy seeds from that I love growing marijuana place....I mean just listen to it n look at the site...1st time i ran across it my "this is whack" meter went on full alert n I kept it scrollin...

I vote genetics on the purple/black leaves
 
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Wizzlebiz

Well-Known Member
The buds are probably small due to what looks like a life long nitrogen toxicity issue. Nitrogen toxicity retards flowering.

Could also be why you are having a P issue.
 
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