Need help with anemone

[Cutiepie]

I have had this BTA for the past 2 months and it had been doing okay. Since past week it’s been closing up and shrunk with mouth wide open. today he did open up a bit and now he looks like this. I also did 10 percent water change. Can anyone tell be if he is about to die?
I was running pennywise earlier and today I changed to salty pop light settings, read nems need more white light than blue.

 

[JazzChing]

Any flow or light changes ?

 

[Cutiepie]

I only changed the light setting to use salty pop ones (today) . I was using pennywise 81% earlier (ai prime hd)

 

[DrkNMighty]

What are your current tank parameters?

 

[Cutiepie]

Ammonia 0
Nitrate 10
Phosphate is on low side close to zero
Calcium 460
Alkalinity 8
Nitrite 0
Ph 8