Why dony my Zoas open up?!

[JazzZero]

For some reason some my 2 zoa colonies or not opening up, well for the most part there not. Anyohow On one of my colony Half the zoa opens up and rest dont and the other one it just doesnt open. Can anyone suggest why or give me a link that can help me with this. Also if you dont mind can you please tell me water elements that i need for zoas. Just so you kno my LPS are dont fine but its just my zoas colonies. THX!!!!

 

[MUCHO REEF]

Just saw that no one responded to your question on page 2. Can you provide a picture possibly or some more background along with your parameters?

 

[650-IS350]

Since your description shows mostly LPS, can I ask what type of power heads or flow you have going through your tank? Cause most folks who keep LPS don't usually use a lot of flow.