I just bought a green lobo brain coral. My water parameters are Sg 1.025, Ca 500, Mg 1350, Alk 9.3 DKH. I only dose those to keep the three in balance. Nitrates 10ppm, all others 0. Test with Salifert kits. When I brought it home I put it halfway up my rock work...30 inch deep tank with 150 MH and pc actinic combo lights, 6 inches off the water. It seems about a 1/2 inch section has receeded off the skeleton, the rest of it looks good. Any ideas? Could it be from the travel from the LFS to my tank? I do supliment for filter feeders with phydo once ever two or three days.