Help with acans

[alexnyc22]

For some reason all my Acans in my system have closed up drastically! Every other coral seems fine but my Acans seem to be annoyed... Any idea why? Parameters are fine, no change in flow or lighting... They just seem ticked off and they're all closed up

 

[Wiz]

I had 3 frags. They also all sucked in one day. For weeks they looked horrible. bony and skeletal. I moved them to indirect light, very low flow, and started spot feeding them reef chilli. They appear to be getting better. Not great but better.

 

[alexnyc22]

Yea mine look the same... Has me worried and every time I try spot feeding them my fish just rip the food out