That green stuff is not my friend.
It came on a rock and has been spreading.
I think I have to tear down this tank and get all the effected rock out for a algae scrub... Its that bad fern like algae.
My sun coral in in the rear view (other side of the tank) I have it inside little caves...
The yellow coral in this new photo is yellow zoa's.
I promise to get a better camera soon
Thanks Terry