What Is This ?

[phaze]

Thought i would ask as this has been growing in my tank and i dont know what type of coral it is , please help

 

[ben1987]

looks like duncans to me

 

[TigerIssey]

Second Duncans

 

[SkiFletch]

As long as it has a solid skeleton (which is unclear in the pic), I'd agree with the Duncanopsamnia