Euphyllia glabrescense, «Blueberry» help

[klavmaister]

70% of my corals died after a crash. but this is one of the corals that survived, lost 3 heads and about 3 heads survived. what I see is that a dark color has appeared (I don't think it was there before) does anyone know what this is? also thought the tentacles have a little poor expansion. take it out and dip?

 

[tzabor10]

Looks like algae. The coral looks healthy. I’d let it be

 

[klavmaister]

Thx for reply