- Joined
- Nov 10, 2019
- Messages
- 8
- Reaction score
- 13
A few months ago all the yellow brick road zoas in my tank closed at the same time. This was odd because they were in patches scattered around the tank. After a few weeks they died back part-way but then the survivors opened up again and have done ok since. Now all the patches of spiderman zoas in my tank have closed at the same time, even the ones on my frag rack. Again everuthing else is fine, including my surviving yellow brick road zoas. What kind of infection or irritant can target one type of zoa at a time? This is confusing to me.