soo88, I'm inclined to believe the cloudy eye has nothing to do with the gill flukes. Cloudy eyes are usually a sign of poor water quality. Discus are large ammonia producers, thus the need for more frequent water changes than lots of other fish. Gill flukes can also get out of control when the water quality diminishes. Larger water changes are a must with the discus in order to keep them healthy. You've got 4 bushynose plecos in that tank and if they are full grown, that's a big bioload as well. I see you are using RO/DI water for the tank, may I ask why? It's quite possible that you can just use tap water conditioned with prime or amquel+ or something similar. RO/DI water is not necessary for keeping discus. Most discus are not raised in RO water and do perfectly fine with tap, so maybe we could find an easier way for you to do larger water changes. Mine are kept in hard tap water, ph 7.6, and I get about 7 nitrates right out of the tap. I use a dechlor/water conditioner matched to the tank temp. and change out at least 50% twice a week.
