Macroalgae and polyp on same rock. Now what?

[alpha123]

So, halmedia huh. Since you said they will play nice for now, I will do nothing and let Darwin decides.
And if one day halmedia dominates the tank too much, I will put in Caulerpa to push hermedia back.

 

[journey0820]

So, halmedia huh. Since you said they will play nice for now, I will do nothing and let Darwin decides.
And if one day halmedia dominates the tank too much, I will put in Caulerpa to push hermedia back.

Uh...wait. Maybe I messed up...I thought caulerpa and halimeda were under the same umbrella of marine plants...I don't think one eats the other...could be wrong.

 

[alpha123]

"My crabs have cleaned out my caulerpa population" I only have red legs and scarlet legs hermits, and so far they have been able to read my mind. They only clean up things that I don't want and left my polyps and macro alone.

I plan to add some blue legs, but people say they have bad attitude. (How can you tell BTW, all I saw are legs...)