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High-pressure sodium (HPS) lamps emit a light heavy in the red/orange spectrum and are the preferred supplemental greenhouse lamp. The red/orange spectrum increases fruiting and flowering in plants. Since plants get all the blue spectrum light they need from the sun in a greenhouse, increasing day length with HPS lamps significantly boost productivity . Plants can be grown solely under HPS light, but tend to be a little leggier than those grown under metal halide and don't look very natural because of the relatively garish yellow hue of the light. HPS lamps are widely used as parking lot and highway lighting where color appearance isn't important. Their long life and high output make them ideal for these types of applications.
Metal halide (MH) lamps emit a full-spectrum light that is the most popular light for indoor gardening. Plants grown under MH lamps look natural and develop a plant habit that is most like plants grown outdoors. Lamps used to light baseball and football fields are almost always metal halide, so that color rendering is best for television and photography.
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|  | | HYDROFARM GROW LIGHT SYSTEM
These digital lighting systems come complete with everything you need to grow plants indoors, including the bulb, ballast, reflector, socket assembly, 15' lamp cord, wire hooks for hanging reflector and instructions. They are pre-wired and take only a couple of minutes to setup.
* Completely silent.
* Small compact design.
* Fast start up.
* Produces less heat.
* Cut-off circuitry.
* Efficient.
* NO FANS.
* Longer bulb life.
* Broader light spectrum.
* More Lumens.
* Fully interchangeable
The 15' heavy duty detachable lamp cord with it's quick-disconnect adapter makes installation a snap. A |
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