Remember you can add fake plants and bricks and things to a QT. It doesn’t have to feel unnatural to a fish with PVC. You can make it quite comfortable for them.
If you QT from the day you receive them then there is likely no reason to catch them out of the DT if they are eating and fat before they go in.
If you QT from the day you receive them then there is likely no reason to catch them out of the DT if they are eating and fat before they go in.