Help with acans

[Janet13]

Not sure what is happening to acans. Had 4 now 3. At first LFS said they weren’t happy, closed up and grew algae. That was weeks ago. Have done a couple water changes and they are slowly dying. Lost one. Alk is currently 10.5 has been between 8.5 and 10.5. PH a constant 8.2. Calcium is 464 and Mag 1400. Feed reef roids weekly.
Up until a few weeks ago they were growing and happy. Any ideas

 

[ndrwater]

Alkalinity bouncing around 2 full points will make any coral upset.
See if you can get to a point of stability. You should see positive results

 

[Janet13]

Thanks. We are using a dosing machine. And are making fine adjustments to try to keep it consistent. Any ideas on what can be causing the bounce. Tank is two years old. Using esv b-ionic alkalinity and calcium in doser and Red Sea coral pro salt when doing changes. We have mixed up and gotten all solids in the esv alkalinity dissolved before adding to doser

 

[Dempsey941]

When in doubt dip it in an Iodine based reef dip.