Feeding tentacles?

[CK Amstutz]

I came in tonight and my Yuma mushrooms look like this. I have never seen them this way so don’t know what is going on.

 

[MohrReefs]

Looks like mesenterial filament to me.
Any other coral near it? New tank?

 

[CK Amstutz]

Looks like mesenterial filament to me.
Any other coral near it? New tank?

Tank is over two years in this aquarium. Seven years then I switched. I have these in three different places and one set has nothing for about six inches. All are doing it. I added marine buffer earlier. Could that be a reaction?

 

[CK Amstutz]

Everything looks back to normal except one. Odd.

 

[MohrReefs]

Tank is over two years in this aquarium. Seven years then I switched. I have these in three different places and one set has nothing for about six inches. All are doing it. I added marine buffer earlier. Could that be a reaction?

Cant say, usually its stress or aggression though if I remember correctly.