That's certainly odd. My issue seems to be mostly lighting and flow. Wrong and the coral degrades then I move it and it comes back healthier than ever.
I would pick one coral and move it to a different lighting and flow and watch it's reaction.
Corals seem to be picky for no reason at all when everything is right.
I would pick one coral and move it to a different lighting and flow and watch it's reaction.
Corals seem to be picky for no reason at all when everything is right.