Hammer coral dots near mouth

[Humuhumu]

Any idea what my hammer coral is doing?

Came back home today and it was fine. Around 8pm I noticed some dots (photo with lights on). And now around 10pm, it's puffy and really bizarre looking (photo without lights on).

Thank you in advance!

 

[MERKEY]

Looks like it's expelling it's color.

What are your parameters?

How old is your tank?

What light do you have and what par is it at?

 

[Humuhumu]

My parameters are:

Temp: 77.7
Salinity: 1.026
Alk: 9.0
Nitrate: 2.0
Phosphate: 0.16
Calcium: 500
Mag: 1400

My tank's about 6 months old. I do weekly 4-4.5 gallon water change on my Nuvo 14 using reef crystals.

I use AI Prime 16HD using modified Saxby schedule. I tested my PAR when I first got my light which read 100 near the sandbed. Since then, I moved around the intensity a little.

I hope she's okay. I have another hammer coral right next to her, and that one's doing fine. Here's the comparison photo (edited for clarity). Thanks for your response!