Metal halide bulbs are fast becoming popular among a lot of reef aquarists. These bulbs have the capacity to give off intense light within a small space. As tanks become progressively deeper, the need for stronger light intensity becomes more imperative than ever. If your reef tanks are at least 16 inches deep, metal halide bulbs are practical to use. If your reef tanks are at least two feet (24 inches) deep, metal halide bulbs are necessary to use.
If you are looking for metal halide bulbs, you can do no wrong with the 400-Watt 6500K Metal Halide Bulb - Iwasaki, Mogul Base from Pet Store
. This bulb gives off full-spectrum light, same kind as the light given off by the sun during the day. The light intensity of this bulb is unquestionably powerful. Instead of a bluish tint, the light given off is yellowish-green. If you want your corals
to grow fast, this bulb is the perfect choice for you, especially if your coral reef tanks are deeper than 24 inches.
When handling the 400-Watt 6500K Metal Halide Bulb - Iwasaki, Mogul Base, it is advisable to use gloves to avoid leaving fingerprints on it. Because of its strong intensity, any dirt getting in the way of the light can be quite obvious.
The Iwasaki 6500K metal halide bulb is a full-spectrum Daylight bulb. It offers excellent light intensity, but will be slight yellow-green in coloration. A great bulb to achieve fast growth. This bulb will work with a standard magnetic ballast, a magnetic EYE ballast or an electronic ballast. This 400W bulb is great for larger reef tanks 24" or deeper. on how the different Kelvin ratings appear and more information on metal halide bulbs.
As a general rule of thumb, use one metal halide bulb for 24" of tank length. Most of the Metal Halide bulbs in the same wattage format can be interchanged. However, please contact us to make sure. Metal Halide bulbs are one the most difficult aspects of the hobby to recommend. Most of the information here is general.
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: using soft gloves is a good idea to keep finger prints off bulb. This is during installation and replacement.