I've tried moving this coral from an area of high intensity light to an area of lower intensity light. Regardless of what I do, it seems to stay fairly brown in the shadows. Is this "browning out" from high alkalinity? Also, when I look at the backside of the coral, which probably gets the least amount of light, I notice the coral is receding and much of the skeleton is exposed. Is this a natural consequence of low light or is the coral actually unhealthy? I should mention that white, misshapen thing on the bottom left of the coral is a vermetid snail. The only way I could get rid of it was to glue the opening shut with super glue. The second photo is under my blue LED flashlight. The first photo is with a standard flashlight. You can see the semi-circular area on the bottom where the coral has begun to recede.