What is on my favia?

[Kerwin1721]

I can't figure out what is all over my favia. They are long strings that almost look a little feathery. is this how they feed or grow? Or is it something I don't want in my tank?

Thanks.

 

[Shep]

Looks like some kind of algae, maybe bryopsis? Try removing it by hand and see what happens.

 

[NanaReefer]

Definitely algae. I'd remove the coral and manually remove as much as possible. Making sure to rinse well before returning.