I use the same general rule as leos... minimum of 1 year old and 50g. A little older is always better so I prefer my females to be at least 60g and 1.5 years old.
thanks alot cody. my female is just under 50, and my male is 40. so ill wait a little while yet. what funny is that as i was searching for the answer your web page never came up. but i just looked at it when i seen that you had answered.
Now my female I just took in is about 2 years old and about 40 grams. and my 2 year old female i have had for about a year in a half is just over 50 grams.