Everything was going great till last night. He was eating really well and looked good. Then, yesterday I guess we had a bacteria bloom of some kind. Started getting some white dusting on the glass. I did a twenty percent water change. By last night he was going down fast. Breathing heavy and panicking. Dead this morning. The water is milky white and can't see to the back glass.

Any ideas?

And thanks again everybody for the help. Maybe better luck next time.