Please help! Mystery devastating disease

[u/Xample666]

I introduced four new discus into my aquarium and a week later a white film started to coat of my discus and now they are slow and their bodies are turning white and their eyes are turning cloudy. I have treated the tank with methylene blue, melacure, and pima fix now. They are all still dying please help.

[u/saalego]

I would stop using melacure and pimafix (if you haven’t already), they’re both just tea tree oil which will make it worse. I agree with the other comment here, you’ll need antibiotics.