Help on identifying cause of failed acclimation

[Jarob]

If the seller had shipped you the fish at a lower salinity/specific gravity, then their process wouldn't work well. Your tank is at 1.023. If the fish in the bags were in less than 1.020 water, then that could result in a fatal acclimation shock due to the sudden rise. Fish can tolerate drops in salinity much better than they can a rise.

Here is an article I wrote on fish acclimation techniques:

Acclimation Methods

Acclimating Animals to Aquariums Jay F. Hemdal c.2020 Introduction to acclimation techniques Most beginning aquarists hear that they must “acclimate” any new animals they add to their aquarium. Acclimation (sometimes termed...

www.reef2reef.com

Added 4 anthais and 6 damsels yesterday and as always used your acclimation process with 100% success. Only takes 30-40min and couldn't be easier (other than dumping)

 

[Evensong]

I am dumbstruck. After an entire week in hiding, and me digging around the rocks to find him, the blenny just popped out tonight! He's breathing fine, and ate some mysis. He's not moving around much, but seems to be on the mend