Running a tank fallow

[Frogger]

Velvet is 6 weeks.

I do not like to treat anything with copper (poison) unless I absolutely have to.

I have found that if you quarantine a fish in a separate tank with a biological filter (low stress) you can watch closely for anything to happen. 9 times out of 10 nothing does. I always do this before I put a fish into my main display.

Some have had success with no quarantine but I have lost a lot of fish over the past 30 years and 2 times completely lost every fish in my tank.