I think my coral is dead but im not sure

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I got this a week ago and had to leave out of town for a week and i came back to this. All of my acros and sps, lps are doing good tho so i dont understand what was the cause, or maybe its not dead? I tried to scratch the coral it was not algae so i real do not know.

 

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This was the coral a week ago

 

[Dcal]

I got this a week ago and had to leave out of town for a week and i came back to this. All of my acros and sps, lps are doing good tho so i dont understand what was the cause, or maybe its not dead? I tried to scratch the coral it was not algae so i real do not know.

what color was it before. algae will cover dead corals pretty quick so if it was like blue or something before its probably dead. if it was green or something may be alive.

 

[Dcal]

This was the coral a week ago

any polyp extension right now?

 

[dank reefer]

I'm guessing that is not the original color if the acro?

 

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any polyp extension right now?

Sadly no, i can see through the hollow crevices where the polyps should be

 

[page]

I'm guessing that is not the original color if the acro?

The original color was brown with light polyps, i posted a picture above the thread for more accurate presentation

 

[Dcal]

Some times its a tough call bc algae can just look like acro color but i would say since you noticed a dramatic color change, no polyp extension, and there is some bleaching near the bottom and surrounding branches Id say dead or almost

however, keep your head up, all your other corals sound to be doing well. Id take water chem measurements and see if anything is off. Id also leave the acro in there for a little bit just to make sure it cant recover

 

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Some times its a tough call bc algae can just look like acro color but i would say since you noticed a dramatic color change, no polyp extension, and there is some bleaching near the bottom and surrounding branches Id say dead or almost

however, keep your head up, all your other corals sound to be doing well. Id take water chem measurements and see if anything is off. Id also leave the acro in there for a little bit just to make sure it cant recover

This is a picture from a week ago, do you know what these stringy figure is? Maybe that is what caused it? Maybe it is some sort of pest?

 

[dedragon]

barnacles maybe? i dont think this acro was too healthy from the earlier pics though, could have been on its way out before you even got it