I'm growing 5 autos.
3 zkittlez and 2 xxl critical bcn.
On the 3 zkittlez on the lower leafs I'm seeing yellow spots.
I've pruned them off and attached pics.
I can't see any bugs at all on the top or bottom of the leafs.
And it dosent seem like mold either. The spots don't rub off in your fingers.
It's only currently on the skittlez and not affected the other 2 at all.
The plants are just over 3 weeks old in coco and I'm feeding nano 0.9 nutes under hps lights 24/7.
Any ideas please?.
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