This falls into the category of 'poor watering habits'. Young plants don't have deficiencies in soil typically, but bad watering, or using too large of containers for the stage you're in, can cause the plant to not uptake the right minerals, micro/macro nutrients.
CFL lighting also isn't going to demand too much growth from the plants, and subsequently, you aren't going to need to give it much. So staying on course with solid watering techniques is going to carry you far and keep the plants healthy with doing less.