GhostKnife
Aquarium Advice FINatic
I have multiple zoanthid colonies in my tank. I have had them for id say 2-3 weeks now. All of them open up when the lights come on and yet one rock with id say about 20-25 has maybe 6 out on it. I moved it after they had not opened up for a couple days. Also a little sand was on them. Any ideas or what I should do or just wait it out.