Looks like a ph issue, but you are growing in coco, right? Is that a peat-based mix with coco, or straight coco noir? If it's peat-based mix with coco added, raise your ph to between 6.3 and 6.8 and see what happens.

No nutes until at least the third or fourth internode.

No foliar spraying, too young.
Rusty Trichome Reviewed by Rusty Trichome on . Problem, I need help I have little yellow in my plants, any1 know what is the problem? Rating: 5