LED v HPS: How to Choose the Best Supplemental Lighting for Your Greenhouse | Ceres Cannabis
HPS vs LED Grow Lights: 5 Barriers to Light Domination | Grow Weed Easy
Cannabis Horticultural Association - Side by side with LED vs HPS week 4-5. They look very similar quality but with LED's pulling 1/2 the watts. The plants under the LED's seem to