Hi, google zones and you'll get an answer.
I'm too lazy to do tropicals so am no help.
Where are you located? I'm east of Grand Rapids. Are you anywhere near Swartz Creek/Flint/Flushing? I just got a notice of a pond tour sponsored by Mid Michigan Pond and water Garden Club, July 12, 2008 9am to 6 -pm. I'll do a thread about it.