Choose from a wide variety of 400 Watt Metal Halide lamps. All Metal Halide lamps are the highest quality from top manufacturers including Sunmaster, Eye Hortilux, SolarMax, Philips, Sylvania, Radium, Ushio & Giesemann MegaChrome.
Metal Halide bulbs produce a strong output of the blue spectrum, which is beneficial for both horticulture and aquarium applications. The blue spectrum is most needed by plants for rapid growth. It's the best type of light to be used as a primary light source (if little or no natural sunlight is available) and can be used as the primary light source to grow plants from start to finish.
We carry only the highest quality metal halide bulbs to ensure color temperature is accurately represented. 10k bulbs seem to be a nice crisp white, while higher k can go from a blue/white to very blue and lower k seem more like that of sunlight (6500k). Metal Halide aquarium bulbs go up to 20,000K providing the bluest light.
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