I agree, try to move them lower or shade them with a rock or other coral, try researching the species to see if it does in fact like darker conditions. Do you have any type of night lights, leds etc. ?
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Equipment: 55 gal, Remora Skimmer w/ maxi jet 1200 pump, 4x54w T5 lighting, 2 super actinics, 2 12,000K actinic white bulbs, 55+ lbs fiji live rock...
Inhabitants: Ocellaris Clownfish, Yellow Tailed Damsel, Six Line Wrasse, Yellow Watchman Goby, 3 Chromis, Crocea Clam, Skunk Cleaner Shrimp
Corals: Zoas, Yellow Fiji Leather, Pineapple Brain, Frogspawn, Pearl Bubble, Blastomussa Merleti, Monti, GSP, Green Psammacora | 
