Help

[datBme150]

I don't know what this is but it appeared after I killed off my hair algae. It looks to be little polyps of something. It seems to really like my tank and is spreading but does not seem to kill off existing coral.

 

[Flippers4pups]

Hard to tell from the pictures, but could be blue clove polyps.

 

[fishguy242]

sympodium?