What is wrong with my euphyllia?

[KVYA]

For the past week this head has started receding unexpectedly. There has not been any trauma done to it and my flow is very gentle. It's a slow pulse wave. About a month ago the same thing happened to one of my frogspawns. It just started to recede but there's no signs of brown jelly

 

[Brew12]

For the past week this head has started receding unexpectedly. There has not been any trauma done to it and my flow is very gentle. It's a slow pulse wave. About a month ago the same thing happened to one of my frogspawns. It just started to recede but there's no signs of brown jelly

I had that happen when I added GFO to my system and dropped phosphates too quickly.

 

[KVYA]

I had that happen when I added GFO to my system and dropped phosphates too quickly.

I haven't added any type of phosphate reducing media or liquids though. And it's only happening to one of the heads

 

[anthonywesty]

Need more light

 

[KVYA]

Need more light

It's been in that same spot for months with no change in lighting

 

[91mini]

Hard to tell sometimes with these coral especially of you haven't changed any parameters lately. If you don't see any signs of brown jelly I wouldn't mess with it too much and see if it comes back. May jut be having an off day. LOL