Definitely had to raise up my se3000 over the Green Crack plant in late flowering. Last weekend 4th of July I was busy and barely home and I got really hot and light must have been too close because the leaves are yellowing from the top down not from the bottom up meaning it was either a nutrient lockout, deficiency, or the light being too close. So I took a slurry test just now and my numbers came back perfect, pH was 6.5 and 375 PPM on a five scale. Meaning I torched my plant with the light. Still getting used to them. These samsung diodes are bright as fuck.