What kind of macro algae is this

[weemanpow3]

This is just growing on my Green star polyp coral. Its not growing fast at all. Is is safe?

 

[Ziggy953]

Can you get a clearer pic of it? It's tough to tell what it is.

 

[Fluff]

Looks like halimeda (Halimeda discoidea). This is a tough calcareous macro that not to many animals will eat. You'll need to trim it from time to time manually to keep it controlled but it's a pretty good nutrient export.

 

[weemanpow3]

Yup it looks just like Halimeda, Thanks Fluff. Well I just edited the other picture and this is the best shot I can get from my camera. I did an old trick where you put a magnifying glass over the camera lenses to make it clearer when you zoom in.

 

[Ziggy953]

I agree with fluff!