1. Aug 25, 2008 #1
   

   Guest Guest

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   i just bought a used set of dule 400 metal halides  what would be a good bulbs for thes i orderd 20k xms for my 250s  would 20ks look good on m59 ballast

    
2. Aug 25, 2008 #2
   

   einsteins Experienced Reefkeeper

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   That is the combo I have been running
   
   XM20k on M59's
   I like that combo a lot...xm20k bulbs will be a bit blue until broke in...then they will be more whitish-blue.
   
   eins

    
3. Aug 25, 2008 #3
   

   Guest Guest

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   ill get xm then i like that bulb

    

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