I wouldn't expect them to open for at least 3 days. My advice is to slowly raise the salinity over the next few days, if the water levels are normal, as far as other parameters, you should see them start opening. Don't expect all of them to open at once. you will see one or two, then maybe a different two the next day, until they are all used to the new environment. Patience is the key.
120 Gallon Reef / 145 Gallon Coral Farm