Need help with Zoas dying.

jonlong724

New member
I have some zoanthids that have been growing very well for a while now, and they started dying off in the middle of the colony. I am attaching a pic because I can see a white branching looking thing and I'm not sure if it's an organism that's doing damage.

Any help would be greatly appreciated!
equvedyn.jpg
 

Inspiritte

New member
Witch type of salt do you use? I have the same problem with Green zoas on instant ocean salt, but when i changed it on tropic marine they all become alive)
 

jonlong724

New member
I have seen the tank at night but haven't looked for a predator. I will do that. I switched from Red Sea to instant ocean, but about 2 months before I started seeing problems. After switching to instant ocean, I saw improved growth.
 

Inspiritte

New member
In center? Its a stone i think. In the left side i can see the bubble i think its valonea
Your zoas a looking healthy, some of them are closed but i think its temporary, try to change water parameters: reduce no3 and phospathes for example
If it possible try to make hd macro photos
 

jonlong724

New member
Need to test water parameters too, but it seems odd that water quality would affect just the center portion. That whole area was totally covered with zoas a couple weeks ago. Then they were closed for a few days in the middle, and now just gone.
 

jonlong724

New member
Took some more pics today. I did a large water change and haven't noticed more polyp loss. Do you guys see any pox? I'm looking but can't see any.

muvu4edy.jpg

je6ahyne.jpg

ruzu9e3y.jpg
 

A. Grandis

New member
If you look at the pictures you'll find some small white spots on the closed polyps, yes.
So hard to really know if that's zoa pox, but if you can remove the colony and use a magnifying glass you'll see.
muvu4edy.jpg


je6ahyne.jpg


ruzu9e3y.jpg

I think it's zoa pox. You need to make sure...
If confirmed, Furan2 treatment!
http://www.zoaid.com/articles004.php

Look like they were growing on a coral skeleton.

Grandis.
 
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