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250 Watt 20000K Metal Halide Bulb - XM,  Double Ended
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250 Watt 20000K Metal Halide Bulb - XM, Double Ended

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Item #: MB6861

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Pick the most powerful metal halide bulb for your advance aquarium - the 250 watt 20000K Metal Halide Bulb - XM, Double Ended from Pet Store . It is the most preferred lamp of most of the well known coral distributors and farmers...
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250 Watt 20000K Metal Halide Bulb - XM, Double Ended Information



Pick the most powerful metal halide bulb for your advance aquarium - the 250 watt 20000K Metal Halide Bulb - XM, Double Ended from Pet Store. It is the most preferred lamp of most of the well known coral distributors and farmers. This is because it performs very well and produces that deep blue light which is the exact color that is needed for the healthy growth of your corals. Other than that, it brings out the color that no other lamp spectrum can provide. So, when you use this metal halide bulb in your aquarium, you will get a similar appearance as that which can be seen at the deep levels of coral reefs.

Further, the 250 Watt 20000K Metal Halide Bulb - XM, Double Ended is designed to be suitable for reef aquariums that contain SPS corals. Its compact high - intensity discharge lamp not only gives off that intense and very bright light, but it can also work effectively under high pressure. Plus, it can also withstand the temperature in the aquarium. However, it requires ballasts that have been specially calibrated to go well with their amperage and can take the heat it creates.

With these remarkable features, this metal halide bulb is truly the most fitting and dependable product for your reef aquarium.

250W 20000K METAL HALIDE DOUBLE ENDED BULBXM

The XM double-ended 20000K metal halide bulb offers excellent coloration and good intensity. It is white with a strong blue tint. It brings out the fluorescent pigments in corals nicely. Fluorescent supplementation is usually not necessary, but can be used for added intensity and to simulate dawn and dusk. This bulb will work with standard magnetic ballast, magnetic pulse-start ballast, magnetic HQI ballast or electronic IceCap ballasts. It must also be housed inside a pendant. It cannot be used with simply a reflector in an open application as UV rays emitted by the bulb must first be filtered with a UV-proof lens. An excellent choice for  reef tanks 22"30" deep.

Common questions/problems concerning metal halide lamps:
  1. 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.
  2. 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.
  3. 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.
  4. 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: Double ended bulbs should always be used with the UV shield (supplied with most pendants). You and your corals can suffer from excess UV radiation otherwise. The bulb should be handled carefully as well since it has no outer glass casing. Using soft gloves is a good idea to keep finger prints off bulb. This is during installation and replacement.

Bulb Replacement Guide
Bulb Types Life of Bulb*
Normal Output Fluorescent 6-12 months
Very High Output (VHO)
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