Cynarina Dying (Emergency)

[PMReef]

Hello, my cynarina is dying and I don’t inow why, water parameters are as follows:

alkalinity 9.5kdh
calcium: 359
phosphate 0.25
nitrates 35 high range
ph 8.7
salinity 1025
magnesium : 1500

Help me what can I do to save it…

I put it on quarantine, then a black spot appeared and two days later as the photos.

 

[Screwgunner]

Spray it lightly with hydrogen peroxide . Or dip . Phosphates are on the hi side.

 

[PMReef]

Thankyou will try

 

[PMReef]

Spray it lightly with hydrogen peroxide . Or dip . Phosphates are on the hi side.

thankyou will try

 

[jkobel]

what was the outcome? i have one that looks exactly the same.

thx