I have had these zoanthids for a year now and they are loosing the "hairs" or tenicles around the head of the polyps. Or better said they dont have any hair at all, but when i first got then they did. one of the two colonies i have has some white on the head of the polyps. the other colony has no white on it but has no hairs around the head of the polyps either. i need to know what this is and how i can fix it.
carboate hardness 12dkh
temp 75-78 f