What a bummer. Sorry you got an evil wisteria. I have had great luck w/ mine but terrible luck w/ those big leaf java ferns, those are evil to me. 2x, 2 different java ferns and they both disintegrated over just a week. I have had wonderful luck w/ the smaller leaf java ferns tho.
Wisteria is my second favorite plant after Anubias. Doesn't grow for me in substrate, though. But it's really great floating. Good topcover to shade my Anubias. And it's the world's best Betta hammock.