Does the level of nitrate in a tank effect the need to acclimate more carefully if they are different? I have some fish in QT I might move into the main tank today and am just curious if that is something to worry about? I never really thought about it before. In the past I have just scooped the fish from one tank to the other b/c the temp., ph, are exactly the same and not had any problems, but I did mysteriously lose a couple of corys after the last time I QT'ed them for a few weeks.