I added a red open brain to my 90 gallon about a week and a half ago. It opens every night so i think that it is healthy, but one half of it seems to be fading to white. I have it on the sand (20.5" Tall Tank) and my lighting is 250W x 2 + 56W X 2 T5 Acintic. Is it possible that it is getting too much light? Other parameters are: Amonia: 0 Nitrites: 0 Nitrates: 0 Phos: 0 Alkalinity 3.5 meq/l calcium: 380 Magnesium: 1250 PH: 7.9-8.1 Temperature: 80 F I have not tried target feeding it as yet. I am really concerned that I might be loosing it! What should I do?