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  1. #1
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    anyone seen hqi 250w de test results?

    i thought a report was coming out soon on all the double ended bulbs?
    i hear people saying the 150 hqi 10k hit harder(par) than a 175 and = to a 250
    250 hqi de = to a 400
    where is the proof?

  2. #2
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    The studies of the Double-Ended bvulbs were published in AA:
    250w - http://www.advancedaquarist.com/issu...4/feature1.htm
    150w - http://www.advancedaquarist.com/issu...2/feature2.htm

    The results show basically what you have described. The 150w is a better choice because the spectral distributions compared to a 175w are very similar and it consumes less power. Same for the 250w DE, a big bang for the overall buck.

    Scott Z.


 

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