zoa problems after water change

[bsylv91]

i went about a month without a water change. after i completed my long overdue water change i noticed that my corals werent looking so good especially the zoas. i have two colonies of zoas. one is a generic green with about 50 heads and the other is blue tubbs that have about 11 heads. after the water change neither colonies opened for 3 days. on the fourth day the greens started to open but the blues are still closed and remain closed. its been like 6 days so far and they still havent opened. the greens dont look good either. it almost looks as if the greens have melted or shrunkin a bit. what do i do

 

[Fishindude88]

Did you mix to the correct SG? If so, I would test your parameters and then do another water change. How old/how big is your tank and how much of a water change did you do?

 

[sweet d]

+1 on maybe the sg is off,how about your ph ?

 

[kyrin01]

Also how large (volume) of a water change did you do. Also your water temp of the NSW, did it match your DT temp?

 

[Fishindude88]

Also, just checking, are you using RODI?