GSP not opening?

[rioreef]

GSP can survive a lot. In fact, it is a bruiser in coral battles and will win over many.
Keep it isolated on a rock separate from the rest of your rock work or it can take over in the end.

 

[ndz98]

So after checking my skimmer yesterday during a water change I realized it was clogged up quite a bit so it was pulling the junk out of the water. I fixed it and after only an hour of skimming last night it pulled out a ton of stuff. The cup is half full now. Needless to say I think that was my problem.

 

[Inesq.]

mine for ex got close after swiching the salt from red sea salt to red sea pro salt , i did change 20l of water out of 80l total and for 2 days they been close ...any other coral is just as normal but not the gsp at the top of rock the one close to sandbed open up as normal