Sick (or Dead?) bubble tip anemone

[Newbie54]

Hey all,
I've had this bubble tip for around 6 months... it has been aggressively hosted by a maroon storm for the duration of his time in the tank, and has appeared fine until the past couple weeks, of which it has been retracted with mouth open. I isolated to a small container still in display tank, thinking maybe the clownfish was causing it issues, but it still appears to be deteriorating, and may even be dead. There is a Haitian anemone in the tank as well which is currently unhosted and thriving. I'm stumped and don't have much experience with anemones, so looking for advice. Is there anything I can do?
Tank parameters are normal and tank has been established almost 2 years. Fish are thriving, just this little buddy is ill.

 

[Gumbies R Us]

What are your parameters? I know you say normal, but what are the numbers? @OrionN @Nano_Man might be able to help you more with your anemone.

 

[Nano_Man]

Age of your reef
And as above says you're water numbers clowns can stress nems out
Also your lighting
Mixing different types can cause problems but if you run carbon then that would help in chemical war fair