Many specialists often recommend this type of light for gardening. The advantage they have over other lights is that, they come in all spectrums from the specialized to the ones, to non specialized. Metal halides have very good lumen maintenance and a long life expectancy.
This means that as the metal lamp ages the bulb starts to reduce its action. This bulb has been found to be the best bulb for achieving the best growth in plant life.
If you have one of these grow bulbs and need to go higher, then you can decide to use the conversion bulbs....
