What about the filter, heater etc? do these things also need to go through a thorough cleaning?Drain, bleach, rinse well, vinegar bath (optional), rinse again, and allow to dry completely for 24-48 hours. Preferably in the sun.
My solution is to by a new tank...that might be extreme though. lol
Currently treating new fish for Flukes, hoping they don't have any other issues!!