Umbrella zoas

[I_Got_Crabs]

My Armageddon palys have been doing this for weeks.... Also, possibly related, my greenbay packers have been shrinking. All my other zoas/palys look fine.

Anyone seen this before or know what causes it?

 

[OREGONIC]

Mine did that for a while then died back to just a few heads. Then exploded in growth. Only thing I could think that caused the issue was I had zero P04 for a while.

 

[I_Got_Crabs]

Mine did that for a while then died back to just a few heads. Then exploded in growth. Only thing I could think that caused the issue was I had zero P04 for a while.

I have been feeding more lately for exactly this reason.

 

[NemHost]

I think it’s caused by stress, ie not enough nutrients or too much light or some other type of rapid change.
When I changed my lights, it happened to my gobstoppers and a few others types but they eventually recovered