When I QT for 8 weeks, I add a small amount of water from the main tank they will go into daily, with small water changes, this allows the new fish to build up resistance to any bacteria they will encounter that they may have not yet built up resistance to.
To me, Qting is not just about keeping stuff out of the main tank, its also about things in the main tank new fish may never have encountered before.
To me, Qting is not just about keeping stuff out of the main tank, its also about things in the main tank new fish may never have encountered before.