250 Watt 14500K Metal Halide Bulb - Megachrome Coral, Double Ended

MB6669

This item has been discontinued.

Giesemann Aquaristic 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
 



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Overall, others give this:

  • 4.1

7 Reviewers (86%) would recommend this

Overall Rating:

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4
4.0
very bright white so far

REVIEW
decided to try the 250W DE version of this bulb after running 20K Ushios for the past 8 months. So far they are EXTREMELY bright white. Not much yellow and not much blue, either. Apart from large Sarcophyton that is just below the water surface showing some burn, all the corals in my mixed tank ...Read More
  • 1
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5
5.0
Best in Class

REVIEW
I've tried several other MH bulbs, and the Giesmann is the best in class. You can really see the difference with the corals. They thrive under the Megachrome and look true to life, whereas with other bulbs the corals do not do as well. I tried using Megachrome and another bulb in the fixture and ...Read More
  • 1
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4
4.0
Giesmann Bulbs

REVIEW
It is a little early yet for me to give a complete review of these bulbs. I am running a Hamilton setup with four atinic blue compact floresents and three HQI 250W metal halides. The megachrome bulbs look a little whiter than my previous Hamilton 14k models. For a 14.5K bulb it is a little strange. ...Read More
  • 1
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5
5.0
Giessemann

REVIEW
These lamps are great! My SPS corals really look good under them and grow too. Also have LPS and some softies.
  • 1
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5
5.0
I like them

REVIEW
I've tried a lot of DE HQI bulbs over the years and this one is the best...for me. I run a 135 Reef and use three of these over the tank. I've focused on SPS but have a few LPS hard corals. These lights bring out the best combination of bright colors and healthy growth. The light is a crisp whit...Read More
  • 1
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5
5.0
excelent!!

REVIEW
excelent product, I recommend 100%.
  • 1
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1
1.0
Very Disappointed

REVIEW
I was very disappointed with the color of the Geisemann 14500k Mega Chrome bulb. I allowed for the 180-200 hour burn in time and the color was still very disappointing. They were very yellow and burned very hot in comparison to the Hamilton 14K bulbs I was replacing. The most expensive bulbs are ...Read More
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Overall, others give this:

  • 4.1

7 Reviewers (86%) would recommend this

Overall Rating:

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5  Star
 4
4  Star
 2
3  Star
 0
2  Star
 0
1  Star
 1
 

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