Moon Coral   Favia sp.

A very slow growing coral. It like medium to high light. When in low light it does start to bleach. I keep it slightly shaded from direct MH light. Must be carefull when placing this coral in the aquarium. At night it has long sweeper tentacles that will sting nearby corals. These stings could kill the nearby coral. The longest tentacles I have seen from this particular coral are an inch and a half. There seems to be a few worms living inside the colony. so far they do not seem to be causing any harm. You can see them in the pic as those spikes in the background.