New additions come in one at a time for me, period. I have one QT cage that is located in the Colubrid room (and vice versa for new Colubrids). I QT for 3 months minimum, sometimes longer depending on the source. I know some like to QT for longer periods of time and some for shorter, but I've found that this length of time works well for me.

I'm hoping to have a closed collection within 1-2 years.