slipper coral concern

[MadReefer]

Just noticed that my slipper coral is getting these white things on it. I tried blowing them off but no luck. Does anyone know what is going on with it? Sorry for the crappy pics.

Thanks,
Mark

 

[roadking05]

IS something picking at it? Looks like tissue is receding.

 

[MadReefer]

Danny,
Not to my knowledge. Could it be to much flow? I can move it.

Mark

 

[Phyl]

Definitely looks like we're seeing the skeletal structure through the flesh. Not a very happy slipper right now. Check your magnesium, nitrates, PH and if they all look good, adjust the flow to it. Try more/less flow/light.

 

[MadReefer]

Don't dose magnesium so I don't test. I attempt a 5g or6g water change every week. If I miss then the following week I do 10g. I thought the salt would replace the trace elements during the water changes. I moved both power heads to the back and aimed them towards the front center. I also moved the slipper to the left front. The only possible thing is that my coral banded shrimp is picking at it when stealing food. Any thoughts on the latter?