You shouldn't drip acclimate fish that are shipped overnight because once the bag is opened, the the fish are exposed to ammonia. I believe you have about 30 min once the bag is opened before it starts becoming toxic. So on top of possible ammonia poisoning and raising the salinity .06, the fish were definitely put through the test.
Divers Den ships at 1.025 but live aquaria is 1.019. For future orders, put a pin hole in the shipping bag and check the salinity with a refractometer and place a piece of scotch tape over the hole and temp acclimate. After you temp acclimate, place the fish directly into the water if the salinity is within .02.