SPS? Algae?

[Tron]

Any ideas on what this is? I didnt put it in the tank it just kind of grew out of no where.
Working on better pics

 

[Tron]

Not the polyps.... :D

 

[little_fish]

the green stuff in algae but the polyps look like manjo nems which are pest and should be killed. I would remove the algae by hand and get some Aiptasia X for the nems

 

[Tron]

any idea what type of algae?

 

[Sir Alex]

Maybe codium?

 

[Smitty]

Yep, that's definitely an algae. Pull it out by hand if possible.