Originally Posted by Cgarcia
Do zoas do better at a distance ? And yea they were good under the light . I was very sudden it started happening .
Okay, here's the deal: Before changing water, check it to make sure there are no levels that are off. If there are, change water. If there are not, hold off on the water change for now.
As for the lighting, you need to think back to when you changed the bulbs and how soon after you changed them did this start happening? If it happened within say 24-48 hours of the change, it sounds like it could be a lighting issue. New bulbs should be giving off a brighter light and the Zoas obviously don't like it. Under these circumstances I would move them away from the lights.
Check water quality first, lighting second. You'll have your answer in under 30 minutes.