Osram - HPS bulbs - FLUO bulbs (lamps) - CMH bulbs
FLUO floriscent neon bulbs are suitable for plants in the vegetative and flowering phase. This type of bulbs are affordable and suitable for smaller spaces.
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.