Sun coral shedding/dying?

[DPal]

Looks like my sun coral is dying. I removed it from DT and hoping to bring it back. Looking at different forums about it but nothing shows a picture of this shedding.

The sun coral was doing well for 3 months but it stopped coming out to eat the last 3 weeks with target feeding using plastic bottle (Reef Roids and mysis). This morning I saw yellow bits of skin like shedding.

Anything that I can do to help it recover?

First picture was in February 2017, second pic is today.

 

[BarryV]

Hi DPal,
I would try taking your sun coral out in small container of tank water and try
with some stinky food (mysis shrimp) and see if it will open. I would try the for a few day, the same time each day.
Barry

 

[Moort82]

That is a stress indication which you often see when they have been shipped. Has anything else changed in the tank?

 

[laga77]

Looks like a WC issue. Also lose the Reef Roids and feed only meaty foods.

 

[rhdoug]

A few years ago I had something that looks similar happen to my sun coral colonies. I had about 6-8 colonies that I had for a couple of years (some much longer) and overnight most of them developed a condition that looked similar. They began losing tissue and I lost most of them. No other corals were affected.

 

[DPal]

Nothing changed in the tank, even my the picky Flowering tree coral is happy. Well the sun coral wouldn't come out and died (smelled). It was my favorite I wanted to start a collection of yellow, orange and black sun corals.

 

[stan80]

My sun coral had a small spot of yellow skin it shredded about a month ago but it went way. mine has went 3 or 4 days without opening up before but usually opens every night