Hi guys, my gsp is not opening. It was doing so good then, suddenly, yesterday it closed, then it opened back up. Now, today, it has never opened, since the light switched on. Usually it will open a few hours before the light switches on, but it didnt this time. It is not being bothered by anything. I dont suspect my water params either, even though I hardly do any tests, because all of my other corals are fine.
Can somebody please help?

. But once in a while, especially if the tank is not too matured, if it's disturbed, dipped with something, or being touched and burned, it can close up for a while. I would say: Don't worry about it. Leave it alone and see how it goes. One thing that I'd like to comment though: It appears you have it glued to your main rock with other corals. I'd say that it's not a good idea. Once it grows, it will grow like crazy and you will have a hard time controlling it. It will be almost impossible to scrub it off the rock then. So, I usually suggest to grow it on a separate rock so it will be easier to control and you will have no regret later on

