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  1.     
    #1
    Senior Member

    whats the difference?

    400 w mh 10k bulb
    400 w mh 20k bulb
    400 w mh 55k bulb
    BlueDragonSmoke Reviewed by BlueDragonSmoke on . whats the difference? 400 w mh 10k bulb 400 w mh 20k bulb 400 w mh 55k bulb:( Rating: 5

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  3.     
    #2
    Senior Member

    whats the difference?

    is there even a difference at all ... the 55k one http://www.esuweb.com/products/243Co...500_KELVIN.htm..... is colored how would that thing go ....who thinks what .

  4.     
    #3
    Senior Member

    whats the difference?

    Hmmm, well it says full spectrum, so if your not planning on getting a HPS for flowering, id go for that last one that yellow.

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