Eye Infection: Fungus? Bacterial? Or What?

[Don Trinko]

I bought 5 small severum from the LFS tuesday. Friday I noticed that two of them have a foggy coating on one eye. The eye is not bulging out and the film is not fillamented. On the one fish it is fairly thick. It looks like someone put a dab of silicone rubber on its eye. Is this a bacterial infection or what? Whats the best treatment?
I put one dose of Formalin in so far. (at first I thought it was fungus) All of the other fish are fine and water conditions are good: nitrite=0, Nitrate=40, PH=7.5, DH=7, Amonia=0. Thanks; Don T.

 

[The-Wolf]

sounds like cloudy eye
a course of melafix will cure this.

it happened, proberbly, because the lfs didn't keep them in good water
yours sound fine which will speed up the recovery.