One of my glofish is sick.



His face is yellowish-white (tip of nose to the front of the gills), he seems blind, one of his eyes is discolored, and he is growing white whiskers out of his face! He is swimming slightly tail-down.
Here are my water parameters:
Nitrate NO3 10 ppm Nitrite NO2 1 ppm Hardness GH <50 Alkalinity KH 50 ppm pH 6.8 He's in a 29 with about 10 other glofish, 6 small rosy barbs, and a gold nugget pleco. I have a UV and a whisper 30. I have the little guy in an eclipse 3 hospital tank. Please help! Thanks Dan