I failed miserably with a previous pro-mix run. This time I am running DWC with AN ph perfect line with ppms around 650-700, ph 5.9. This works perfect with my hps. Only difference in LED is I add a little more cal mag. The temp is around 73 degrees when lights are out. I need to check with lights on and will report. Same exact hempies are flourishing under hps. Again I sense this is a heat issue. Left the tent closed during the light period by accident and the girls took a real hit. I've pulled most of the burnt leafs off. Might be too late for these girls. One I moved to hps is rebounding!!!