Two patches of the same zoas have closed up. The mat on them looks like it has brown fungus on it. One colony is recovering the other is on the way out. I've looked for nudis or sundials, I can find none. The rest of my zoas and my tank are doing fine, even the zoas right next to these colonies, even thriving. I'm thinking about waiting a week, about the same time it took for the other colony to recover before freaking out.



