m0useanswered grow question 3 years ago Given that is was stretching a lot in week one and light was to high, I think the good looking green plants are doing pretty good.
Stunted but healthy.
The yellow one maybe more hungry. Or have to much feed in the soil.
This link is one I reference a lot for auto feeding guidelines in terms of PPM/EC I'd suggest giving it a look and seeing if its similar to what your doing.
https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/
Best Of Luck!