Elegance Help

[Keith Russell]

I’ve had this elegance coral for about 6 months. It has been a beautiful coral. Fully extended one of my favorites. In the last say 2 weeks it has been shrinking. Not extending and not looking well. I have included before and now images. My chemistry is as follows. 0 ammonia 0 nitrates 0 nitrites Ph 8.3 phosphate .02 cal 430, alk 8.5 salinity 1.022.
Any ideas or comments would be appreciated thanks

 

[JGT]

I’ve had this elegance coral for about 6 months. It has been a beautiful coral. Fully extended one of my favorites. In the last say 2 weeks it has been shrinking. Not extending and not looking well. I have included before and now images. My chemistry is as follows. 0 ammonia 0 nitrates 0 nitrites Ph 8.3 phosphate .02 cal 430, alk 8.5 salinity 1.022.
Any ideas or comments would be appreciated thanks

Salinity is a bit low. Should be closer to 1.025. Should also have some nitrates, 10 ppm or less. The are typically found in silty water that has nutrients. Flow should be moderate.