Yellowing

Not much info to go on, but I would suggest burning from too much nutrients, most probably nitrogen judging by the colour of the leaves. You also seem to have smallish pots, which could be the reason for nutrient build up. Try just giving her/them a feeding only every second or third watering and see if the problem goes away over the next two sets of leaves. If it does, ease back on the nutrients or feed them at only half the strength as to what you are doing now. Hope this helps... Organoman.