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Zoa skirts bleaching?

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AcroNem View Drop Down

Joined: June 02 2013
Location: Orem Utah
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    Posted: July 01 2015 at 8:15pm
I just noticed the skirts of a couple of polyps on this colony have turned white. It can be seen best on the bottom of the colony. Of course I notice it right as I'm about to leave for a week I'm hoping it's not going to cause problems while I'm gone but I wanted to check. I've never seen this with zoas before It looks like it's expelled the zooxanthellae in its skirt. Any other ideas what this could be?

Also: params are stable.
Alk: 9-10
No detectable ammonia,nitrite, or nitrate as well as phosphate.
Everything else is thriving.

Edited by AcroNem - July 01 2015 at 8:19pm
150G mixed reef, growing coral farm.
Thirteenth year keeping reefs, always here to talk fish.
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