Discus Problem

I agree..bump the water changes.
even if nitrates are fine ..clean water is beneficial to help with healing.

watch for aggression..

how is the discus coloring..their color is a great indicator of stress.
 
How do you know it will clear up? Explain your answer so someone can get a correct accurate answer.
Taking into consideration the problem at hand and the circumstances surounding the post,water quality issues tend to be the cause a majority of the time,I have gone away for short periods of time to come back and find a fish with these symptoms.I did a couple water changes in 12 hours and the problem was gone..Given the responses that this post would get and the good info out there, PWC's would be the first thing to do under the posted conditions,To many people think they have to start adding medication wright away,when its not needed..I hope this clears up your issue............:)
 
ooh, yeah, forgot about coloration. Typical black bars showing are a good indication of stress. Also the speckling on pidgeon bloods. If any of these are showing, your fish is indicating that its stressed.
 
I've upped the water changes in that I am now drawing out the same amount but doing it twice a day... The fish is a light golden / yellow colour with darkish fins - hasn't changed colour (I know the others get dark). I will try and get some pics up in a bit....
 
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Pic of the discus with the cloudy eye - sorry I shot it off my phone's camera...
 
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