always quarantine??

[christyf5]

Hey guys,
I was just thinkin and I was wondering why you would have to quarantine a fish, say if it was from J&L aquatics. I noticed that on their tanks it says that their tanks have copper in them. I know that copper isn't the answer to every fish disease but do you still have to quarantine if you got one from them??

Thanks
Christy [img]smile.gif[/img]