Refugium Lighting

You can really use anything for a sump.. If you plan on growing any macro algae within the sump just look for something along the 6500k light spectrum.

melev also has some good information here

rsw beat me to it.. ;)
 
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You could go take a look at the petstore and see if they have a 6500 kelvin bulb.. I have seen some at my LPS.
 
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