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zoa will not open

i have had these zoa for some time now. they look like they want to open. i have tried freshwater bath and medicoral coral dip. They have cloesed up for a week now. Any help thank you
 
What kind of lighting? What else do you have in the tank? What kind of flow do you have on the zoas?

What are the tank parameters?
 
MikeNapoli said:
What kind of lighting? What else do you have in the tank? What kind of flow do you have on the zoas?

What are the tank parameters?
More info on your tank setup and parameters will def help to answer your question. Do you see any white film over your zoos?
 
I have t5's 39watts i have zoa's acans {hammers frogspawn on the other side of the tank} yums ric's leathers as for the flow i
koralia#3 and just put a #4 in there but zoa were all ready cloesd i have them a my frag rack in the back of my tank so there not get bet up by the flow
 
I have a ton of zoas. i find that they dont like too much magnesium. i overdosed the tank beyond 1800 once. also they dont like too much salt. mine start to close if i let my specific gravity climb up to 1.032 :-\.
otherwise, dip them in freshwater and furan2. seems to help my zoas when all else fails. Mine get a ton of random flow, and love that most.
 
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