Rick D,
My anemone goes a bit off during the night, opens well during the day but blooms in the late avo/evening when the lights are on. I do find though that if the lights are left on for more than 6 hours a day he wilts badly. He also does not like being in a direct flow of water and will shrivel. I feed him prawn twice a week (or my maroon feeds him actually) the next day after feeding he is beautiful. My maroon will not feed him fish but only the fresh prawn. I'd say the prob is one of the three lighting, water flow or feeding.
Deb