Large White Specks on Glass ID

[SeaHorseQueen]

Hi, so I cleaned my tank up except scraping the glass to help with phosphate including taking some of the green hair algae off the walls and some of the rocks that I could. But, what are these on the glass? They don’t move. I do have snails and copepods on the glass but not that big. I turned the light on to show what I’m talking about. It’s been here for the last three days or so and all over the glass.

 

[SeaHorseQueen]

I should add that my gsp coral isn’t very happy looking to me. Is it dying?

 

[ISpeakForTheSeas]

I'm not sure in this case, but I'm happy to give you a bump to see if someone else knows.

 

[Reefing102]

I’m just going to take a stab in the dark here, perhaps spirorbid worms but honestly not too sure. As for the GSP, it looks closed but doesn’t appear to be dying or dead to me