Algae problem

[sully08]

Can anyone identify this algae for me and how I can get rid of it. My tank has only been running for about 5 months so maybe its new tank sydrome.
-220g with 72g sump and skimmer
-400w of brand new T5 lights
-6500g/hr of flow
-nitrite 0
-ammonia 0
-nitrate 0
-phosphates 0, maybe they are getting sucked up by the algae before I can detect them.
-RO/DI water used http://s1089.photobucket.com/albums/i342/sully21122/