Thanks, Tony.
I picked up such a little frag early last year from Aquatic Gallery in Milpitas when I knew "nothing" about selecting "nice" corals. I just got lucky and MAN does it provide shade! Place one like this near the bottom of the tank with no photosynthetic coral at or below it. My recent fragging of it was in response to it growing over and shading a meteor shower cyphastrea that has recently started spreading off the disc and onto the LR.