Daisy polyp?

[justjes45]

Pout- live this little beginner coral and as of a week ago it stopped opening up. It was growing and creeping over a rock nicley before this.
Any ideas?

 

[saltyfilmfolks]

Too many things.
Any recent changes to your tank would be the first thought.

 

[justjes45]

All water tests are the same numbers. There is one red bristle worm that seems to be living underneath which could be the problem –

 

[twilliard]

That looks like GSP mat.
These guys are the best at telling you there is a problem with chemistry.
They DO NOT like change hands down.

 

[justjes45]

I have never heard of GSP... Hmmmm

 

[MadCityReefer]

Green Star Polyps "GSP"

 

[saltyfilmfolks]

Green star polyp
https://www.google.com/search?q=gsp...X&ved=0ahUKEwjW4r35q7TKAhWM5SYKHWmKDmYQsAQIGw

Daisy polys are different.
http://www.liveaquaria.com/product/prod_display.cfm?c=597+599+671&pcatid=671

I havent been able to find them near me for a few years. I lov em.
The worms wont bother them.
Double check everything.
Its also possible its a long term build up OR reduction of nutrients.