Zoas dying

[Ejostling]

Has anyone had a Zoa colony do this? It looks like the polyps are melting and turning brown. I have looked carefully for pests and visually there is nothing to see. They are just slowly melting away. Any advice on how to save them?

 

[Katrina71]

Is that cyano on your rock?

 

[Ejostling]

I don't believe so.

 

[DSC reef]

Zoas can do this time to time. Never understood the exact cause. For now I would try a dip like coral rx or seachem reef dip. Put a power head in the bucket so there's plenty of flow. Anything from pests, lighting, chemistry and even flow could irritate a colony.

 

[Ejostling]

Ok. The lights just came up so here's a clearer picture.

 

[ScottB]

Couple questions:
a) age/size of tank
b) how long that zoa been in there
c) can you remove to dip
d) water parameters
e) what other corals are in there and how are they doing
f) what are your lights?

 

[NewGoby]

Ok. The lights just came up so here's a clearer picture.

Is it just me, or is the tank primarily lid by white lighting, that's the first thing that seems odd to me

 

[Saltyreef]

I run my tank closer to natural daylight spectrum vs blued out. My blues do run at 100% but my whites are at 90% and my zoas love it.

Ive had this happen to a very sensitive colony due to a nutrient spike. I ended up just pulling them out and doing a furan 2 dip and added some iodine to the tank. They look better than they did before but youll only be hopefully saving the ones that havent turned brown. Furan 2 has worked wonders in the past for zoa pox so im sure this unknown type of infection, furan 2 might work.

Ps fwiw, i did a h202 dip and it seemed to make them melt more...3 parts tank water to 1 part household peroxide.