Sunshine Systems GSSPOT GrowSpot Mixed Spectrum LED Grow Light Bulb E39 Use with your current mh or hps lamp to dramatically increase your yield Mixed spectrum growspot creates light that is suitable for all stages of plant growth Does not contain harmful metals or gasses like fluorsescent, hps and halide bulbs Use with your current mh or hps lamp to dramatically increase your yield Mixed spectrum growspot creates light that is suitable for all stages of plant growth Does not contain harmful metals or gasses like fluorsescent, hps and halide bulbs GrowSpot LED grow light uses only 12 watts of power No infared or uv light making them perfectly safe for the home or classroom