Doesn't sound good. Once an eartheater is going upsidedown its probably not going to recover. Still... you are doing mostly the right thing - water changes, salt, and meds... I would do another large water change to be sure the ammonia and nitrites stay down. If the fish shows signs of recovery, give us a call and we can help you get it back into good shape.
Do you know why you lost the fish in the first place? The fish may still be suffering from the inituial cause - and if its parasite related,
you need to treat for that first. Feel free to call or come by if you think it well help.
-Sam
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