my corals

[meagheavz]

i hav a few zoas, one of them is falling apart. all my water parms are at where they should be

 

[DevIouS]

http://www.manhattanreefs.com/forum/reefs-beginners/8799-beginners-please-read.html

 

[basiab]

i hav a few zoas, one of them is falling apart. all my water parms are at where they should be

Evidently they don't think so.
Actually it may just be chemical warfare at play. Do you use carbon. It may help.

 

[EmilyT]

are they expelling brownstuff-zooanthellae?