re the eyes thing... refer my topic in the diseases section.... v v long posts...
completely baffling people.
in the end i used salt, acriflavine, quinine, meth green and furan to control sheer devastation and walked out with 3 CL deaths and almost everything else dying. if it weren't for those meds nothing would have survived.
let me know if you see similarities between the symptoms. I'd keep that salt in the tank, but when you do water changes which you will have to do a lot of- add only a tiny amount of salt thus reducing the salinity.