Need help with coral

[sagi]

I've had it over a month ago and I noticed that he's starting to die on the left and there's something you can do? The values are normal .. Is there something I'm doing maybe wrong?

 

[sfin52]

What's your tank parameters

 

[vetteguy53081]

Without chasing values, I would focus on calcium and ALK levels.
High alk may be a cause as is Low Calcium.