I'd like to make my now spare 10 gallon aquarium a QT tank. I read the FishLore QT tank article but I still have some questions - 1) Do I want a lot or few hiding places, or none? Any other decorations? 2) Say I'm using the QT to hold some new fish before adding them to the main aquarium in two weeks or so; how many small fish is too many to QT at once? Small as in 2" max. I know I should keep it to a minimum since it would be easier to track down sick fish, plus even though it's temporary it's still small.