Should I be concerned?

[DSinSoCal]

I just noticed some white specs on my zoas today. They're super small so I can't tell if this is harmful (requiring a dip), or if this is just substrate dust from my water change yesterday.

They aren't as fully open as usual, and I don't see these dots on any of the other colonies, so I figured I'd better ask the experts.

 

[zoeth]

Looks like substrate. Take a turkey baster and see if it will blow off.

 

[DSinSoCal]

I did that the after I posted the picture. Some of it blew off, and most of the rest of it was able to be brushed off, but a few pieces still seemed pretty attached.

After that the zoas started looking more sickly. Not as big, not as full, some whitish film on their faces and skirts. I'm not sure what's going on with them. I dipped them in CoralRx on 8/3 and they don't seem to be getting worse, but they don't really look better either.

Is it time to consider a Furan 2 solution, or should I just give them time to bounce back on their own?

 

[ozmosis7]

Maybe zoa pox?

 

[jeffmol54]

yep harmless, parasites are usually bigger