Fesvitus favites help

[Reef man 89]

i got this coral the other day and for some reason it looks like the tissue is dieing but not sure if this it normal this is my first favites. All my parameters seen to be in check so I am asking for some help. It is place maybe 3 inches from the bottom and my led is only at 60%. Can somone shed some info for me please

 

[Tahoe61]

Make sure you're not over illuminating the coral, it may need to be acclimated more slowly to your lighting. Avoid swings in alkalinity. Is it possible the coral right next to it is stinging the Favia?

 

[Reef man 89]

The one right next to it is a mushroom that is tiny. Maybe the size of a penny it looks bright because of the flash on my phone, my dkh is at 8 according to my Api test kit but Idk how accurate it is.