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Home » Aquarium Supplies  » Lighting  » Bulbs  » Metal Halide Bulbs  »  17500K MegaChrome Crystal Metal Halide Bulb - Giesemann, Double Ended
17500K MegaChrome Crystal Metal Halide Bulb - Giesemann, Double Ended

17500K MegaChrome Crystal Metal Halide Bulb - Giesemann, Double Ended

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17500K MegaChrome Crystal Metal Halide Bulb - Giesemann, Double Ended Information




MEGACHROME crystal - the perfect light source for all marine aquariums that need a strong light performance in combination with a high blue/violett ratio.

The MEGACHROMEcrystal metal halide bulb offers excellent coloration and high intensity. It is crystal/crisp-white with a light violett/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.

The light spectrum has a pink accent and shows fluorescent effects on many corals which gives a completely different impression of the colour. The very high colour temperature of this bulb is achieved through a special manufacturing process which at the same time guarantees a long colour stability which is a problem with many bulbs towards the blue end of the spectrum. The lifetime of this brand-new bulb generation, due to the innovative technology, will be over 3 years, prooved by several tests.

This bulb contributes to a healthy growth of your corals and produces stunning colours in your reef aquarium. An excellent choice for reef tanks with SPS and LPS corals.

Made in Germany
  • Color temperature: over 17.500 Kelvin
  • Double ended
  • 150 Watts - about 7.800 Lumen




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







Manufacturer Info

Giesemann Aquarium Lighting Systems
Giesemann Aquarium Lighting Systems is the market leader in Germany thanks to their beautifully engineered designs and unsurpassed build quality. Thorough testing during the research and development stages of Giesemann products ensure total reliability and longevity in the finished product. Giesemann lights can be used to illuminate both freshwater and saltwater aquarium systems. They offer a variety of high-end metal halide and T5 fluorescent aquarium light fixtures, bulbs and accessories, like cooling fans and suspension kits. Giesemann is one of the few brands that pays as much attention to the exterior design of their products as they do to the hardware they put in them. This attention to detail is evident in their modern, minimalistic designs and has helped garner the brand a reputation for crafting first-class products.

17500K MegaChrome Crystal Metal Halide Bulb - Giesemann, Double Ended Reviews



Average Rating
(4 reviews)
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Yellow and ugly

by
Reviewers Rating Unsatisfactory


Posted: 9/18/2013 from MARIETTA, GA UNITED STATES
1.0 5
Experience Level: Intermediate


Comments: I am very disappointed with these bulbs. On the plus side they are much brighter than the XM’s they replaced however they are very yellow. My tank, 120 gallon reef, has never looked this bad with any other bulbs. They have only been in place for a few days so I am still hoping they will change and I don’t have to throw over $200.00 worth of lights in the trash. Grading these bulbs as 17500K is a complete misrepresentation as I have not seen even a hint of blue or violet.


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250 -17500 Giesemann

by
Reviewers Rating Excellent!


Posted: 4/27/2012 from HOUSTON, TX UNITED STATES
5.0 5
Experience Level: Intermediate


Comments: I bought these bulbs to replace my old XM 15000 bulbs. The 17500 have the same color. My SPS corals love them and they are growing like crazy. I did, however, have to move some polyps down lower. The bulbs have 6 months of use now and they're still strong...will buy again. They're not yellow in my icecap lighting system... THEY ARE PERFECT!!!!!!


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Yellow Yellow Yellow

by
Reviewers Rating Unsatisfactory


Posted: 4/15/2012 from DUPONT, WA UNITED STATES
0.5 5
Experience Level: Expert


Comments: I have a SPS dominant tank. I've been using Pheonix 14K bulbs for a year now. Thought I would try out the Geismann because I love their other products. 7500K color temp!!! They advertise 17500K. Completely yellow. I don't want a neon blue tank, but this is ridiculous. They may grow coral, it's too early to tell the coral response, but a complete waste of overpriced bulbs.


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Yellow Yellow Yellow

by
Reviewers Rating Unsatisfactory


Posted: 4/15/2012
1.0 5
Experience Level: Intermediate


Comments: I have a SPS dominant tank. I've been using Pheonix 14K bulbs for a year now. Thought I would try out the Geismann because I love their other products. 7500K color temp!!! They advertise 17500K. Completely yellow. I don't want a neon blue tank, but this is ridiculous. They may grow coral, it's too early to tell the coral response, but a complete waste of overpriced bulbs.


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