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. This means that you do not need to buy a completely new bulb, but rather you can use the conversion bulbs. HID bulbs use sodium halide bulbs with ballasts.
This can be used to bring plants to vegetative states before you switch immediately to sodium conversion bulbs. It is important to note that there are gardeners who change their bulbs as much as 4-5 times in one single growing period of the month.
