help trouble with zoa...

[skull]

whats this white looking spots on the tube? when they get it they don't open as big anymore then they close up and never open again.....

closing up:

closed up:

 

[EDGRAY]

They look like they have some kinda fungus on it ... or Nudie eggs... not sure about it but a good dip of lougols iodine with freshwater will kill any bacteria that might be on it ... do dip it does wonders on zoas....