Moult = UK spelling, molt = US spelling.
Trying to see if I can remember . . . I got a mix of 2I and 3I in May of 2007, my first male matured at the end of August, and my first female matured in February. So yeah, six months for a male, and a year for a female might be a good rough estimate.
I wouldn't put them together until they were 5I if I were you. Males and females are about the same size at 5I but the males will have their bulbous chela noticeable; females are quite a bit larger than males when they hit 6I.
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