I have autoflowers in coco coir 70/30 both same issues light green leaves from 1 week, start feeding with nuts after 7 days of germination.

@Mr. Grow It not really, i just done run off of another plant for the first time in beginning of week 2 and ppm like 2678 spice high, so flushed more till manage lower it down to 1400ppm with ph6.4 flushed with 5.7ph and bit of cal mag only 8l around. not sure if plant survives but fingers cross. :) or should i flush till i get 5.8ph ? just run out of water have only tap water now...