is this plant good or bad ?

[jmillerfla]

I have had this growing on my live rock for several months. this is the only rock that has it. I keep clipping it but it continues to come back. Is it good or bad for the aquarium.


Photo attached

thanks

https://www.facebook.com/photo.php?...004211473.1073741827.587061472&type=1&theater

 

[phobos2deimos]

That's Halimeda, couldn't tell you exactly what species but it's a good macro.