3 fish dead. New fish won't even eat live black worms.
Per http://edis.ifas.ufl.edu/vm077
a bath treatment with dimetridazole (80 mg/L for 24 hrs,
followed by a 80-100% water change, repeated daily for 3
days); or b) a bath treatment with 2-amino-5-nitrothiazol
(10 mg/L for 24 hrs, followed by a 80-100% water change,
repeated daily for 3 days).
240 gallons=800 L
Treated
also with TCN, Rid-Ich, Melafix....the kitchen sink.