Ok, noticed this just now. Last Saturday, I mixed some of the coco peat with ucg which I dried for a week. I used the mixture to put the transplanted basil and a couple of chilis (they are all more than 6 inches tall). I left them out in the shade with 2 hours of light just to get them used to the new soil, and watered them just once. When I checked out today, the top budding leaves have yellowish color from the stem up to the middle leaf. Could this be too much N or I still need to put them in minimal light for another day?