Artificial Emotion
Bluelighter
I don't think it's light bleaching that's causing the severe chlorosis (aka yellowing in plain English). The tops look like they could possibly be a bit scorched, but it's hard to tell whether that's from the lights being too close. I doubt it if I'm truly honest though. But hey, you never know what the issue could be at the end of the day.
Edit:if some plants are only 8" then that's too close mate.
Prelude, are you able to give EC readings as opposed to ppm? Or does your meter only read in ppm units? There's no 'set' ppm you should be giving your plants.
Prelude, feed your plants at 50% the "regular" dose now at every feeding. Otherwise you might end up at square one again.
Edit:if some plants are only 8" then that's too close mate.
Prelude, are you able to give EC readings as opposed to ppm? Or does your meter only read in ppm units? There's no 'set' ppm you should be giving your plants.
Prelude, feed your plants at 50% the "regular" dose now at every feeding. Otherwise you might end up at square one again.