Black spot on leaf?

Hey guys, one of my plants developed this black spot overnight on her leaf. Any ideas what this is?

Medium: Coco/perlite
Light: 400w HID
Stage: Day 6 Vegetative
Nutes: FloraTrio + Cal-Mag

Did you possibly spill some liquid on it ?

Nothing except maybe some water.

Kinda looks like 1 leaf was overlapping/touching another perhaps?

So, maybe no a deficiency after all?


I think your ok.
Looks to me a dark green color.
Just keep an eye on it for a few days.


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Thanks man!