Best spectrum of T5 for refugium

[AlienSpawn]

I have a 65 gallon reef aquarium. I am in the process of adding a refugium. I am converting and Eclipse 6 tank which has a top and built in light. The bulb is a 12" T5 bulb and I was wondering what type of bulb is best for macroalgea in a refugium. Thanks for your help.

 

[Llamaguy]

http://www.melevsreef.com/fuge_bulb.html

The standard Marineland bulb is 5500K so you might not find much better if you want to keep the original hood and lighting. If you want, Hagan's Aqua-Glo is specifically for plant growth and is similarly priced to the OE bulb.