Okay I just described it all in my above first post.
He's in a size three gallon tank alone besides one mossball.
PH has been a little shaky and recent tests came out fine.
Temp is usually 81 degree's.
No ROOM for a QT tank or cup. I read salt on one site didn't say which kind but he's had these dots on and off for the past two months and finally this one has stayed he's had two of them at a time at most. His eye is cloudy and puffed up. I will call my mother at three thirty to tell her what to get. My instincts are going off and saying there can't only be one way to treat this. I don't want him to lose his eye.
EDIT: Okay hot water for the decor but the glass if getting the vinegar and the moss ball's getting warm water. I'm just scared because the last time I posted about a sick fish he died and no one helped me...Not sure if I got any replies after his death but it would have been too late. Within hours I lost him.
I'm not losing this one.