Chalice receding advice needed

[vcollins9850]

Question. Bought this chalice back in March. Last 2 weeks been slowly receding. Only coral having an issue. No fluctuation in parameters, but I changed lights and had a new fish that was spitting sand on it so moved it to a shadier spot. Light has been in acclimation for nearly a month, but still worried it was too much. Already did an iodine dip a couple days ago and spot fed a bit. Anything you would recommend? Just try to be patient and leave it alone?

 

[CK00020]

Is it getting enough light, other params?

 

[vcollins9850]

Is it getting enough light, other params?

My worry was too much light. Went from a small kessil pendant to xr15 blue. Recession started 2-3 weeks ago, been acclimating light for about 4-5 weeks. Only other change was blenny that sprayed sand, so moved it from a ledge lower third of tank to sand bed under a ledge a few days ago.
no change in parameters over last 2 months and all other corals happy.
temp 79
Salinity 1.026
Alk 7.1
Calcium 425
Mag 1350
Nitrates 10
PO4 test kit dead. But tank was always high .08-.1

 

[Graemesreef]

Looks better than mine, when mine started acting up I fed some easy lps pellets and he plumped back up after a couple weeks. Funny never have to feed the pectinia but this guy's a little priss.

 

[vcollins9850]

Looks better than mine, when mine started acting up I fed some easy lps pellets and he plumped back up after a couple weeks. Funny never have to feed the pectinia but this guy's a little priss.

How often did you feed it? I have some brightwell lps pellets I can try