To implement an effective quarantine
procedure, all new fish must be kept in a separate system,
ideally in a different building or area from the resident
fish. Resident fish should be fed, handled, and maintained
before the new fish. The quarantined fish require dedicated
equipment such as nets, buckets, and siphon hoses that
are used only for them. In addition, foot baths and hand
washes should be used by anyone entering and leaving the
quarantine area. Fish should be quarantined for a minimum
of 30 days. Specifically for KHV, new koi should be
quarantined in water that is 75°F (24°C) for at least 30 days.