sorry i am pretty clueless about the technical side, its a 220L tank, changed the water a week ago after another cichlid died (had no obvious symptoms) checked ph and it was fine. dont add any other chemicals we use fresh water for the tank. the make-up has been the same for about 2 years, no other fish have died or been added and no new plants or anything. we do changes every couple weeks. never had any problems before. i am in australia.
symptoms: noticed about 3 days ago the cichlid had one eye popped out. added vita-pet multi-cure that contains malachite green, methylene blue and acriflavine. white sores have come up over its head, one just above the other eye looks like flesh or something is protruding from it. fish is pretty lathargic and breathing pretty heavy. not swimming on an angle or anything.
i dont have easy access to chemicals as i live in the country, anything would have to be ordered over the net so need to know if its worth the wait or if euthanasia is better option for fish.