I have a 75gal setup, tank at this moment is 80*, usually sits at 78*. I use a fluval 405 with pre,carb,bio. No other filtration. Last water change was last weekend and it was a 30% change. I have 13 cichlids most peacocks, 2 black fin sharks(cats), pleco, and 2 Chinese algae. Couple weeks ago I noticed my Nyeri acting reel shy and not eating much at all. After the water change he passed thru the night. Now since then I have notice my 4" m sunshine has something on his mouth. Looks like the skin is peeling off leaving a red surface beneath, the mouth before this was turning white with no fuzz. Then the peeling started, also I notice my female sunshine has cloudy eye since the male has broke out with. Her eye seems to be getting worse even though I'm in 3 days using melafix and primafix. The eye seems to be disforming now instead of keeping the rounded shape. And I can't tell on the progress of his mouth. The only other males in the tank are a Acie, Ngara, Flavescent (spelled wrong I know), Green afra. The other are all females Bracardi, borleyi, yellow lab, lithobate, OB, two others I cant confirm the name. My main problem is I don't have a Q tank setup. I feed once a day with rotation of Spectrum pellets, blood worms, and Cichlid Flakes. All the other fish in the tank are doing great, very active and eating like usual. The female cichlid is doing ok as far as eating and moving around the tank. Its the prized male sunshine I'm worried about. Hes been lingering in the back of the tank, not eating in front of me. He has been doing better since starting the "fix" treatment, hes moving around more vs. sitting behind things for days. The tanks has been setup now for over 6mon. I will post pictures tonight when I get home from work. Any suggestions would only be suggestions until photos are posted, btu they are still great appreciated.