New addition to my coral and not sure what it is

[JK75gal]

Hi Everyone,

My coral is growing very nice and looks happy. then this showed up recently and I wanted to be sure it isn't a bad thing.

As always, thank you in advance.

JK75GAL

 

[encrustingacro]

Clavulariidae sp.

 

[JK75gal]

Clavulariidae sp.

Apologies for the question. Is that the coral or the dark strand sticking up out of the coral?

Thank you,

 

[Lemons]

Looks like cyano with air bubbles trapped in it

 

[JK75gal]

Looks like cyano with air bubbles trapped in it

That makes sense...even to me... LOL Thank you!!