damn man that shit got deep fried! is that from fert burn? dont think its the lights fault but definitely a bummer on an otherwise decent looking harvest.
give it time n dont overwhelm it with strong direct light... maybe a light feeding in 5 days. sometimes clones barely yellow and other times they can come out looking pretty rough like yours. doesnt seem to be so bad that the plant won't recover.
no first hand but iv heard enough people talk about the black dog being less than reliable whereas the other two you listed have very good reviews from growers.
and already you are proving to be quite the douche.... damn near record timing! almost every one of your posts is about nutrient lines and laughing at someone else. surely a "head grower" could put their knowledge to better use here