two pretty fresh clones in miracle grow organic soil (feeds periodically) 6 100 watt power cfl lights only a bit of reflective material in the grow area with white walls. the tips of the some of the leaves are slightly charring and yellowing and a few largely affected areas. some new growths on the bottom of the small plant are being affected by the same problems. i am attaching a few pictures let me know what you think or post if you need more information.