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Old 10/26/2017, 01:24 PM   #1
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What causes zoas to "dome" like this?

These People Eater zoas have looked fine for weeks but a few days ago one of them started to over-open (turning itself into a dome shape), and then the other one started doing the same thing yesterday. None of my other zoas are exhibiting the same behavior.

Does anyone else have experience with this kind of behavior?

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Old 10/26/2017, 01:27 PM   #2
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Not sure why the pictures didn't upload. Possibly too large? Let's size them down a bit and try again...

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File Type: jpg 20171026_140952.jpg (76.8 KB, 74 views)
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Old 10/26/2017, 04:13 PM   #3
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Further info... It seems like they are unable (or unwilling) to close up completely. I gave them a quick CoralRX dip and they shrunk while being handled and dipped, they didn't close. It's almost like they are "cramped" in the open position.

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Old 10/26/2017, 06:25 PM   #4
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They should go back on their own.

My build thread:

Current Tank Info: 65 gallon mixed reef, Eshopps sump and HOB overflow, RO-110int skimmer, Reefbreeder 32" photons V1.
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Old 10/27/2017, 03:19 PM   #5
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My experience is they dome when the light level is too high for them. Other zoas look fine.

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Old 10/29/2017, 10:54 AM   #6
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i have same problem several months back too ..they lasted like this for ever..never went back to normal...then the melted away....thats just my experience...never new why...

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Old 10/30/2017, 12:33 AM   #7
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Hmmm what have you been dosing? They say call a doctor if it lasts longer than 4 hours.

Sorry can't help, but wanted to subscribe to this thread for info and replies as I'm curious.

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Old Today, 05:27 PM   #8
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What is the name of the zoas in the OP?

I have the same ones. They domed like that and stretched their mouths open wide while reef roids was in the tank yesterday.

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