Radium 250W, 20,000K Metal Halide Bulb, Mogul Base

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Radium 250W, 20,000K Metal Halide Bulb, Mogul Base

Product code: 790
LT-RD-250-20K

Availability: In stock

Ships today if ordered in the next 9 hours and 43 minutes!

$81.95
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Radium 250W, 20,000K Single Ended Metal Halide LampThe German-made Radium 20000K metal halide bulb offers excellent coloration and good intensity. It is crisp-white with a strong blue tint...


The German-made Radium 20000K metal halide bulb offers excellent coloration and good intensity. It is crisp-white with a strong 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.

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  1. Just Do It! Review by jason
    Product Rating:

    I switched to M80 ballasts to support these bulbs and am SO GLAD I did....they're beautiful AND grow coral! (Posted on 9/13/2014)

  2. Just Do It! Review by jason
    Product Rating:

    After a lot of research I decided to change to M80 ballasts to support these bulbs. WOW, I'm so glad I did...they have a look all their own...beautiful...and they grow coral! (Posted on 9/13/2014)

  3. Best bulb on the market Review by Ash

    Have three of these running over my 125 mixed reef. GREAT bulb. Brings out all the crisp whites and the really nice blues. No need for actinic sup. I have a very compact, closed canopy, and am using these with three Lumenmax elites, so I have no room in the canopy for anything else. Will never use another bulb...I AM considering upgrading two of my 250 galaxy ballasts to two 400watts, but we will see about that soon enough. (Posted on 12/8/2009)


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81.95 In stock
Radium 250W, 20,000K Metal Halide Bulb, Mogul Base 5 out of 1 5 based on 3 ratings. 3 user reviews.
Just Do It! Review by jason
Product Rating:
I switched to M80 ballasts to support these bulbs and am SO GLAD I did....they're beautiful AND grow coral! (Posted on 9/13/2014)
Just Do It! Review by jason
Product Rating:
After a lot of research I decided to change to M80 ballasts to support these bulbs. WOW, I'm so glad I did...they have a look all their own...beautiful...and they grow coral! (Posted on 9/13/2014)
Best bulb on the market Review by Ash
Have three of these running over my 125 mixed reef. GREAT bulb. Brings out all the crisp whites and the really nice blues. No need for actinic sup. I have a very compact, closed canopy, and am using these with three Lumenmax elites, so I have no room in the canopy for anything else. Will never use another bulb...I AM considering upgrading two of my 250 galaxy ballasts to two 400watts, but we will see about that soon enough. (Posted on 12/8/2009)
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