!I have a notebook with all my T's info in it from molt dates-fed dates-maintenance dates and other info like when I received them size an blah blah. I have all my cages coded with perm marker i.e. T2= my 2nd terrestrial tank or A1= 1st arboreal tank. I use these numbers in my notebook so I know whos living where and I know who they are cuz I name all my Ts.
I keep the ones who enjoy heat a little more near my heater vents.