Originally Posted by
evanjah
http:///forum/post/3243031
for a few days now some of my zoos are closed and havent opened. Thet are all attatched together but i dont see anything irritating them. Any ideas or do they do this every once in a while?
A quick search over in the zoanthid forum will yield you some additional thoughts, but it could be issues with flow, lighting, reef chemistry, an unseen antagonist (that maybe only comes out at night), or an unnoticed irritant (spag. worms or algae), they could even be dividing. Some more specific info also may help in getting some answers.