Coppersafe and Java Fern

I had an outbreak of ich in my tank which I treated with 
Coppersafe...unfortunately.  Since that time (about 3 months ago) my Java 
Fern seems to have gone dormant....all the new shoots stopped growing, and 
the leaves seem to be slowly darkening with algae.  Before the copper 
treatment, it seemed very healthy, growing rapidly.

Is the Java Fern dead?  I'm relatively new to the plant business, and I would 
have thought that if it was dead, it should rapidly shed a pile of decaying 
leaves (which it hasn't done.)  If it is dormant...how can I revive it?  The 
copper should be long gone via water changes and carbon by now.