Assure they're getting medium light and water flow. This coral is photosynthetic and needs flow to keep waste and sediment off of it
I second this! BUT for the wellbeing of the coral I will try my best to help!
its hard to tell if anything is wrong with the coral just from salinity (unless the salinity is really low or high), if possible i would get some test kits soon especially if you want to keep more advanced coral. for the GSP in this case just give it time when added to a new tank it gets moody. it will open within a few days
Add some holy water to reduce the satanity, GSP is likely possessed and needs an exorcism. Joking aside, how are you measuring your salinity and has your tool been calibrated or tested for accuracy? You'll have to try pretty hard to kill the GSP, it's pretty forgiving.
What about your other parameters? How are all of them?
Yes - it is likely ok - GSP - depending on conditions, can stay closed for 1-2 months before opening. However - watch for negative effects in your tank (fowling, etc) - in that case it may be lost. Can you post a picture - and are your parameters ok?
