Zoa problem

[Goldenshark14]

Hi all

My green zoa started out great when I brought it, and was normal for a week or so, but over the last week less and less polyps were opening, and the ones that were getting smaller, to the point now where there are only a few open polyps. Anyone know what I can do to fix it, despite owning marine for years, my zoa knowledge isn't great so any help would be

Thanks for answering

 

[A. Grandis]

There are way too many info to be asked so people can try to help you.
Please start posting a picture and let us know your water parameters.
Did you dip the zoa before introducing in the tank?
Did you look for possible predators, including fish?
...
etc, etc..
Try also to do a search here and find similar problem...That will save us some time.

Grandis.

 

[Goldenshark14]

Water parameters

Water parameters

Hi

I'll post a pic of it when the light goes on later, but water parameters are:

Ammonia:0
Nitrite:0
Nitrate:10-20
Phosphate:0
Calc- 400-420
pH:8.3

 

[A. Grandis]

Waiting for the pic and more info about recent changes and the system.

Grandis.