I guess it was just coincidence when I tried ots LEDs for the 1st time. I had pulled the diffractiors off and had 'em pretty close to the plants. It must have been a freak genome of some White Widow because the leaves came out all albino then greened up a bit. C- crop that time. Then I read somewhere that LEDs should be 18" away. I suppose that was referring to those fancy grow LED panels. Always learning, thanks for the advice.