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20000K Metal Halide Bulb - Megachrome Blue, Double Ended

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We offer a wide variety of Metal Halide bulb choices to suit your aquarium lighting needs.

Most of the MH bulbs in the same wattage format can be interchanged. However, please contact us to make sure.

The K at the end of color rating for each bulb stands for Kelvin. This is a measurement of the color temperature. The higher the Kelvin rating, the cooler (bluer) the color of light given off by the bulb. In general, the color given off by the 10,000K German is interpreted as being a perfect white color.

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)	6-12 months
Power Compact (PC)	9-12 months
T5 High Output (T5HO)	9-18 months
Metal Halide	9-12 months
LED (non-moonlight)	~5 years (50,000 hours)
* Manufacturer Recommendations

Customer Reviews

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3 of 3 people found the following review helpful:

Excellent!

megachrome 20K by TONYA BEAM

Experience Level: Intermediate

Posted on 7/7/2008 from CHANDLER, TX UNITED STATES

Comments: I would highly recommend these light, they are great. If you want your coral colors to pop Buy these lights. I had 10K's and they were fine but I wanted more blue, so I ordered the 20k megachrome and I was so pleased. Plus my coral love them. One thing I have to say also, I have ordered from Marine Depot several times and they always have good prices and if you need help just call they are always helpful and have some one who can answer any question you may have about a product. Hope this helps someone who may be wondering about the 20k's. Thanks Tonya Beam
Yes, I would recommend this product to my friends.

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3 of 3 people found the following review helpful:

Excellent!

Gmann Megachrome Blue by Kevin (Aquarius77)

Experience Level: Intermediate

Posted on 11/1/2007 from HIGHLAND, IL UNITED STATES

Comments: A quality bulb that produces a very nice crisp clean white light with the perfect hints of blue. With a stable burn time of 6000 hours you cant go wrong, thats almost 2 years depending on your photoperiod. I have been running mine for about 4 months and i love it.
Yes, I would recommend this product to my friends.

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March 06, 2010
"Marine Depot is AWESOME. I purchased my item and it was at my home in two days using normal UPS shipping!!! Thank you for your great customer service."
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March 05, 2010
"Delivery time is unsurpassed. If you need it fast, there is no place faster than Marine Depot for standard shipping. They also have almost anything I could need for a reef tank."
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March 01, 2010
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20000K Metal Halide Bulb - Megachrome Blue, Double Ended

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