I noticed this on my Black Molly this morning. It doesn't seem like any other fish has this, just the Black Molly. My questions are these:
1. Since the Molly has Ich in the normal tank, should I treat the whole tank or just QT the Molly?
2. I don't have a QT tank at the moment, and was thinking about going to buy a 5 gallon QT tank. How can I set it up to maximize the chances that the Molly won't be stressed because it's not cycled?
Any help would be greatly appreciated.

1. Since the Molly has Ich in the normal tank, should I treat the whole tank or just QT the Molly?
2. I don't have a QT tank at the moment, and was thinking about going to buy a 5 gallon QT tank. How can I set it up to maximize the chances that the Molly won't be stressed because it's not cycled?
Any help would be greatly appreciated.
