Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Might do it all at once, and plan on daily giant water changes, I would also add zeolite to the filter, and change it out pretty much daily, too.
Better through to buy a small tank (10 gallons) kit and set up the fish in it for a month. Then you can take down the 10 gallon, and keep it as a quarantine tank.