What could have caused my rainbow monti frag to turn pale. It was sitting about 5 inches down. Tank is lite with an ati sunpower that is hung about 11 inches over the tank so coral was 16 inches down. Calcium between 400-420, alk about 10, and mag is 1300. Mag was low at about 1000 and I brought it up over 3 week period. Wanted to know if dosing or lights could be causing the pale colors, not white but just faded. I have had frag for three weeks and the light has been on the tank for about 2 months. I changed from a nova pro and have not moved light from that height because I also faded a cats paw and didn't want to take a chance lowering the light in case that is the cause. Any ideas as to the possible cause would be great.