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		400 Watt 10000K Metal Halide Bulb - German Ushio, Mogul Base Availability: Usually ships the next business day Item Code: MB8413 List Price: $130.95 You Save: 45.96 (35%) Your Price: $84.99 Price Range:   Qty:   Details Write a review Email To Friend Avg. Customer Review (2) reviews

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400W 10000K METAL HALIDE SINGLE ENDED BULB - Ushio This German-made Ushio 10000K metal halide bulb offers excellent coloration and intensity. Crisp Ice White appearance, full spectrum - the combination of different wavelengths produce different colors in the spectrum and appear to the naked eye as crisp ice white light. Significantly brighter than U.S. made 10000K bulbs. Use alone or add Actinics for a bluer effect. This bulb has a heavy concentration wavelength spike in the 420 and 460nm (nanometer) range with additional concentration spikes in the 380nm, 550nm and 580nm wavelengths. Tested in Germany - simulates natural daylight as in the ocean at depths up to 13 feet. Longer life - TRUE-10000K Metal Halide has an exceptionally high rated life. Very High Color Rendering Index of 95 CRI. Actinic supplementation may be used to create a bluer look.  An excellent choice for reef tanks 24" or deeper. Please click here for more information on how the different Kelvin ratings appear and more information on metal halide bulbs. Common questions/problems concerning metal halide lamps: Metal halide lamps of the same kind are different colors? Metal halide lamps operate by passing an electric arc through an arc tube that excites particles in the arc tube. When the metal particles reach an excited state they emit energy in the form of visible light. It takes 100 hours of operation before the metal particles stabilize and become a consistent color. All metal halides require 100 hours of operation before color and light output stabilize. All metal halides inherently have a slight color variation between individual lamps. The metal halide lamp fires and then either burns dull or the arc extinguishes? Usually the ballast and lamp are not receiving enough power. Metal halides pull a high current. Usually the problem is either there is too great a load on the circuit or the extension cords are of a small wire size and can`t handle the power needed by the ballast. Use only heavy duty extension cords and try running a ballast off a circuit from another part of the house. Do I need a cover shield between the lamp and the aquarium? Metal halide lamps produce a large amount of UV and also have a potential of exploding. The single ended metal halide lamps have an outer jacket which eliminates most of the UV. However, they have an inherent risk of exploding and UL requires metal halide lamps to be enclosed. On double ended lamps there is no UV shield. Double ended lamps must have a glass shield or major eye injuries including blindness may occur. Can I operate a ballast and lamp together which are designed for different wattages? Each wattage lamp and ballast are designed together for optimal performance and safety. If you over drive the lamp it may explode and shorten the life of the ballast and lamps. If you under drive the lamp it will also shorten the life of both components and also may explode. Do not mix different type wattages of lamps and ballasts. NOTE: The bulb should be handled carefully during installation and replacement. The average life expectancy of this bulb is 12 months. Customer Reviews Write a review 0 of 0 people found the following review helpful: Average Only 11 months by JOHN THERIOT Experience Level: Intermediate Posted on 12/6/2007 from HENDERSONVILLE, NC UNITED STAT Comments: I ordered 2 of these bulbs back in January of this year (2007) and one of them stopped working only 11 months later. First time that I've had this short of a life span with a metal halide. I would not recommend this product to my friends. Was this review helpful to you?         0 of 0 people found the following review helpful: Average good bulb/high failure by ERIC H BORNEMAN Experience Level: Expert Posted on 11/30/2007 from Texas Comments: I purchased this bulb to replace an older Iwasaki bulb. The Iwasaki is a workhorse with incredible PAR and a long lifespan even if the color is not ideal for aesthetics. I alternate with 6500K and 10000K lamps on some tanks. This bulb was recommended to me and I had not tried it before. The bulb lit well, the PAR was very high for a 10K bulb, but it failed after a few weeks. With your excellent customer service, was able to replace it quickly and we ascertained with the manufacturer that the ballast/bulb combination was correct. The second bulb was equally good, providing crisp white light but then failed after two months. I am now on my third replacement bulb. I cannot say why I am having a high failure rate with this bulb but it is functionally and aesthetically excellent. I hope this one continues to burn for me. Yes, I would recommend this product to my friends. Was this review helpful to you?         Similar Items