HID GROW BULBS

High Pressure Sodiums (HPS) lamps reproduce light from the red/orange end of the spectrum, mimicking the colors of the harvest sunset. Plants use this kind of light in reproductive processes, and thus HPS bulbs help your plants to produce more fruits and flowers. At 97-150 lumens per watts, HPS light produce more lumens than a MH, but exposing flowering plants to only a red spectrum light during the vegetative stage tends to make them stretch, lose their color and start to look downright bulb.

Of the two kind of HID grow lights, Metal Halides have the more balanced spectrum. They will bathe plants in light from the bluer end of the spectrum, which indicates to the plant that it's spring and time for growth. Generally speaking, Metal Halide light is used for plants which are encouraged to grow many leaves and become bushy such as lettuce, spinach, cabbage and herbs. They are also excellent for the vegetative stages of growth. They promote tight internodal spacing between branches, and help the plants to develop thick stems and large leaves which will support later fruit and flower growth.

HID grow light bulbs are made to ONLY work in HID light fixtures. The bulbs on these pages are replacement bulbs for growers who already have grow light fixtures. If you are interested in a HID grow light (which we sell with the bulbs) go HERE

You should also never put Halide bulbs is a High Pressure Sodium grow light system or High Pressure Sodium bulbs in a Metal Halide grow light system. The grow light ballasts are only meant to run the type of HID bulb they are rated for. If you want to produce MH light from a HPS grow light or HPS light from a MH grow light , you should purchase a conversion bulb.

Metal Halide lamps should be changed at least every 6 to 12 months if you're burning them 18 hours per day. High Pressure Sodium grow light bulbs, burned at 12 hours per day, will last between 6 months and a year and a half depending on the bulb.