Size of Quarantine Tank

[Handofdume]

It looks like i got a case of ich. I currently have 6 fish (flame angel, 2 black/white clowns, longnose hawk, orchid dottyback and a randalls goby. I was gonna pull them and QT them.

Can i do this in one tank?
If 1 tank can be used is a 20L big enough?

My plan was to leave them in the QT for 6-8 weeks to be sure the main display is ich free.

Thanks

 

[wooden_reefer]

Tyically the min size of a QT is one where a fish will still eat in it.

The medium of filtratiion is what decides the nitrification activity. The medium for a QT should be very well cycled in advance. This generally is a problem if you just now set up a QT when you see ich.

I systematically eradicate ich and always have a mature cycled medium of enough size and density of bacterial population standing by at almost all times.