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Home » Aquarium Supplies  » Lighting  » Bulbs  » Metal Halide Bulbs  »  250 Watt 20000K Metal Halide Bulb - Hamilton, Double Ended
250 Watt 20000K Metal Halide Bulb - Hamilton, Double Ended

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

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250 Watt 20000K Metal Halide Bulb - Hamilton, Double Ended Information

  • True 20,000k
  • Ideal Choice for Deeper Marine Life
  • Emits and Intense, Vibrant Actinic Blue light with high spikes in the 420nm range
  • Simulates sunlight at ocean depths of 12-25 feet
  • Promotes the development of photosynthetic plants, anemones and coral
  • Intensifies the natural fluorescence in fish, coral and marine life
  • More economical compared to Radium brand with equally as good quality
  • Must be used with a 250W Magnetic ballast ANSI code M58 or 250 watt electronic ballast
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.

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

Hamilton Technology Aquarium Supplies
Hamilton Technology is the leading manufacturer of high quality aquarium lighting offering customers the widest selection of metal halide, compact fluorescent and VHO lighting available today at the lowest prices. Their mission is to offer state-of-the-art lighting that meets high standards of quality, innovation and value. Hamilton Technology has served the lighting needs of both the professional and the hobbyist aquarist for more than sixteen years and is considered by many to be the choice of experts.

250 Watt 20000K Metal Halide Bulb - Hamilton, Double Ended Reviews

Average Rating
(3 reviews)
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Reviewers Rating Unsatisfactory

Posted: 4/18/2013 from SOUTH LAKE TAHOE, CA UNITED ST
1.0 5
Experience Level: Expert

Comments: This 250w burns like a 15K. It definitely burns white as apposed to blue. Since buying this bulb a week ago, I purchased a Coral Color 20k which outs out a nice blue-ish hue.

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I got the good blues now

Reviewers Rating Great

Posted: 10/9/2011 from RIVER OAKS, TX UNITED STATES
4.0 5
Experience Level: Intermediate

Comments: I put this in the day it came in. So far a like the blue tint of this light. It came well packed, which is maybe something people forget about, but it's important when it comes to this kind of product. I can't really say much about how much my corals like it as of yet.

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Hamilton 20k bulb

Reviewers Rating Excellent!

Posted: 9/11/2011 from Parkville, MD UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: Received my new Hamilton 20k DE HQI bulb.Sent on time and in perfect condition.I am very impressed with the Hamilton 20k bulb, very blue, and bright. Thanks to customer service for all of their expert assistance!

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