Coral ID? Petco save

[BigBabich]

I occasionally try to save corals from petco. When I bought this it was under cyano and hair algae.
I dipped, cleaned it and quarantined. Now it's happy but I have zero idea what it is.
It's on a plug and is the size of a quarter.

 

[Saltyreef]

I occasionally try to save corals from petco. When I bought this it was under cyano and hair algae.
I dipped, cleaned it and quarantined. Now it's happy but I have zero idea what it is.
It's on a plug and is the size of a quarter.

Stylocoeniella