Lesson Learned and a warning

[Fishlips]

You probably would have done better by doing nothing but feeding a little more.
Your fish couldn't cope with the quick hospital tank setup, lower salinity, , the Greenex, and of coarse all the stress they were put through.
All your fish definatly did not die from ick. If your fish were thriving to start off with most if not all would have survived.
I'm not criticizing (you did put in a lot of effort to "save" them), just making a point for others.