May 28, 2011 #1 Jspires688 Aquarium Advice Freak Joined Mar 6, 2011 Messages 236 Location Indiana I have a sps coral that is turning white in spots what causes this
May 29, 2011 #2 ccCapt SW 20 & Over Club Joined Mar 15, 2004 Messages 5,365 Location Northeast PA Could be high temp, too high or too low alk, not enough light or not enough food.