thats sum nerd shiNot good acclimation and may or may not be a factor.
In addition to drip which is typically an hour, see my method below. There are many methods but the goal is to equalize temp-salinity and Ph and if you did not aim to get the salinity alone close to each other- steps were missed. Hope fully you did not add bag water to the tank either,
My acclimation method (not the only one out there):
I generally:
Float for 20-30 minutes
Transfer fish and water into a clean bucket
Then . . . .
Measure the Ph, salinity and temperature of the bag water. If you can, make up some water in a container that has exactly the same measurements as the bag readings and move the fish right over, then you can add a cup of tank water to bucket every 15 mins 6 times (almost 1.5 hours)
Then check salinity in bucket and compare to tank. If no match or very close, add a cup of water every few mins until youve reached salinity and trap fish in same cup and pour off water and release into display. Release under LOW light before lights out.
Fish in shipped bags produce carbon dioxide and ammonia. The carbon dioxide lowers the pH of the water in the bag, That in turn makes the ammonia non-toxic to the fish. When you acclimate them, if not done just right, you drive off the carbon dioxide faster than you are diluting the ammonia. That raises the pH of the water in the bag, and that in turn, makes the residual ammonia very toxic to the fish. Sometimes, the fish will die right in the bag
