FLUO bulbs (lamps) - HPS bulbs - CMH bulbs - Vegetative stage
HPS (High Pressure Sodium) bulbs are suitable for plants in the vegetative and flowering phase. HPS Lights emit white light.
CMH (ceramic metal halide - also LEC or CMD) bulbs are suitable for plants in the vegetative and flowering phase. CMH lamps produce the most sun-like spectrum of light.