I have 2 plants that are 3 weeks old. I have them in potting soil only (transplanted from some miracle grow). They are under 2 75 watt daylight cfls and a 75 watt warm white floro at 18/6 intervals. I water them at most every 2 days depending on how the soil feels. In the past 3 days the fan leaves have turned yellow with a little brown on the tips and yesterday they were drooping. Is it too early to use nutes? I'm think ing a N deficiency or am I over- watering? Please help me out.