What's wrong with my corals.

[JCulmo]

Hi all
Having a problem I can't trace back. Orange fungi is closed up tight. Lost half colony of zoos, blue hydro loosing tissue fast. Torches, acids hammers, chalice all great. This was a sudden onslaught over few dats.
Parms: 9.5 dkh, 390 Calc, 1.024 sal, 10 nitrates , 1200 mag. ( dosing mag now back to 1380 slowly.
I'm at a loss

 

[Tfink660]

try ordering some coral frenzy or ref chili and let them filter feed.. it usually makes all my corals extend like crazy..

 

[JCulmo]

Been giving them reef chili few times a week