Absynthe

Recently, my mollie's tail has been rotting away, and I truly don't know why. The water is a bit cloudy, but everyone else is doing just fine, 'cept for my Molly. As a result, all she does is just relax at the bottom.

What is going on and how can I cure it?

Jason

First what are your ammonia, nitrite and nitrate readings. If you dont have a test kit you'd better get one ASAP. Is your filter adequate for your tank?(GPH etc...) How long have you had your tank set up?

It sounds like its fin rot which means your gonna have to medicate with an anti-fungas fin rot treatment like Maracyn I and II or Melafix, Pimafix or something like that. She doesnt sound good if she's on the bottom.

Hope all goes well!