ok so i have had my green glove polyps in my tank for about a month now and all of a sudden within the last few days they started looking like thisphoto 1.jpgphoto 2.jpgphoto 3.jpgphoto 4.jpg

are they being bleached? if so the only thing different to the lighting is i took the leds off the glass and hung them 4 inches above the tank.
parameters are all within normal, ph-8.2, ammonia 0-0.25ish, nitrite 0 and nitrate like 5-10. please help if you can these guys are my favorite and dont wanna lose them. thanks

Brandon.