Zoanthids closing one type at a time.


New member
A few months ago all my yellow brick road zoas closed. They stayed closed for weeks and died back, but then the surviving ones opened again. The odd thing was that the patches of yellow brick road zoas were spread around the tank in differemt spots and all my other zoas were fine. Now almost all of my spiderman zoas are closed. Even the ones on the frag rack. All the other zoas (including the surviving yellow brick road zoas) are fine. What disease or irritant hits zoas by type?


Well-known member
They do reportedly wage chemical war with each other, and compete for space. So perhaps it isn't species-specific as much as too many varieties in one tank?


New member
Hi I have these zoas but I'm not sure if they're doing good because 2 of them at the front have been closed for about a week. Does anyone know if they'll open back up and if the rest are looking good. I recently did a water change so hopefully that helps.

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