Wow Acan issue... never seen this before

grisha

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Wow guys what can this be
Have you seen this type of tissue loss. I have over 100 acans in the tank and only one I found like this today.
it was fine yesterday full polyp extensions
My par
Temp 76
Salinity 34.9
Ph 7.9
Opr 355
Kh 7.1
No 5
Po .03
Damage was covered with some type of film. I blew it off with turkey buster
Please help, any input appreciated
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grisha

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It was very light, looking like a slime after coral been attacked by something stronger. But nothing could of attacked it. It surrounded by acans
 
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grisha

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3 hours later
Damaged polyp trying to expand and feed. No jelly or slime accumulation
I don’t think anything like fish or shrimp can attack it.
I have a cleaner shrimp, blood shrimp flame hawk clown and Midas blenny. Hermits pretty rough bunch but they keep to fight between each other
Measured all 6.5 gonna get it to 8 next 5 days

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AcroNem

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If I'm seeing it correctly, something ripped some chunks off of it. Other blennies can eat corals, is there a chance yours has been?
 
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grisha

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Acro, thank you for input.
My Midas blenny is very docile
Hawk is a boss but should be reed safe
Clown, no way
Cleaner shrimp or blood shrimp just don’t have that power
Hitchhiker? I don’t know, I buy frags, but I don’t think anything could pass my dips
Only one coral affected, it’s 95% Acan frag tank. Over 100. It did had a slime on it, but I always though jelly is fast and you can almost see it grow within an hour time span and can half of affected polyp try to live after it slime ?
 
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grisha

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i consider that acan the Annabelle of coral because it looks like Satan himself has manifested into it...
Let it be satan, just not jelly
 
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grisha

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I would not passively stand-by and move the frag to a different spot.
Kind of though of the same thing, but in the other hand, change of flow/light might irritate and cause more weakening? This way I wouldn’t know if that killed it?
 
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grisha

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lights out shot
8 hour later. No slime accumulation.
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grisha

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Third day update
2 polyps that were immediately affected in first picture continued to deteriorate
There is a brown slime
My question. If this a brown jelly desis e can it be moving so slowly? Quotes of polyp a day?
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