green algea on LR and coral ?

[Mghslowell]

hey guys i am noticing that there is a growth of a light greenish algea is growing on my LR and the dead coral i have what is this ? beneficial? its almost taking place of the purple algea on my LR

 

[ntswift]

Check in my picks to see if it looks anything like what you have. I have the same thing going on. there is a post about it. (purple vs. green algea) Maybe a picture of it might help everyone figure it out. HTH