plants are dying

Hey, I’ve just transplanted 4 plants from solo cups to their 2 Gallon Air Pots. I have them running on 600w MH lights right now, hung at about 24” from plant tops at 100% lumens. These plants 2 weeks exactly from sprout. I’ve noticed two of them have some slight lime green to yellow on the...

Im genuinely clueless, so i apologise for that. I grow these im a greenhouse, only about 50% of plants are affected. About ten days ago, i overfed them, about 2x what they needed. I saw first signs of nute burn after that. Since then ive only given them water, but the plants are just going...