ALgae on SPS

I got this guy a couple week's ago and on the back is mostly dead from laying on it's back during shipping. On one of the branches it has some green Algae building up. I moved to a higher flow area but it seem's to be slowly spreading. What can I do to get rid of the Algae before it takes over the live area? It is only a small spot about 10% of an American Dime in size. Would a freshwater dip help with the Algae?
Or is it a bad idea to dip SPS in F.W.?
What can I do?
Ghost

 

Also Missionsix told me this should be green incolor since it is a Favia. How long will it take for it to regain it's natural color? It is 4 inches under water the light's are Catalina 6 bulb t-5's.

 

? any idea's