Large Stylophora (blue) dying.. help please!

[benkrebs]

Hey community,
since 2 years I have a large Stylophora growing and looking nicely.
It survived all hazards and did not seem sensitive.
But now it seems to die rapidly...

I do
- dose Vibrant
- dose Sangokai NRG (changed recently)
- increase Li and Flour due to an ati lab water test

My water values are
- KH 8.0
- Ca 410
- Ph 8.2

Do you have any advice what to measure / check / dose?
Do you know any disease / pest / animal that could cause this?
Any advice how to stop it? Shall I cut the dead parts, etc.?

Thanks a lot and happy reefing :-)

Best,
Ben

 

[Cabinetman]

I’d be doing some fragging. My big birds nest colony did this not to long ago. I fragged a bunch off and ran carbon and it stopped it. Do you run carbon? Ozone could help too