IamRit;473623 wrote: Sometimes mine does that too but I don't see any stars near them. I always thought something in the water that causing the problem, low mag or strongtium, maybe?
So your paly were perfectly fine before the Asterina got on them. They looked as you decribed after the Asterina layed on top of them?
I will investigate. I need to find this out since I have lots of zoa and many more are comming. Don't want to lose any zoa if I can help it.
I'm going to catch a few blue and grey Aterina and drop them on my Purple Hornets.

j/k I'm going to test out a few small patch of zoas. We'll see.