Sun coral necrosis?

[sassyonmane]

Unsure which section to post this in but I’ve had this sun coral for over a year, started off super small and I grew it out and was super healthy, extending every night until sunrise even without food but when I moved it to my other tank it was fine for 2 days then stopped opening and eventually had its tissue getting blown off when I turkey basted it leaving yellow dots all over it, what would cause this? And should I leave it or frag it or iodine dip or cipro dip it, should I move it back into the old tank?
In the old tank it was getting little to zero flow and in the new tank it was getting pretty high flow in the sump

 

[KrisReef]

I don’t know why?

Put it back to where it was thriving.

 

[PolypPocket]

You mentioned it had low flow before and high flow now. Maybe that was too much of a shock? What about parameters between the two tanks, are they vastly different? Light different? How did you acclimate it? Is there anything in the new tank that could be picking at it? These are just some things I’d ask myself if it were me.

I agree with Kris, move it back. But now it has to recover so it’s not going to show lots of improvement right away, be patient.