To those that haven't heard the story - I got my two (supposedly female) crested gecko's in Aug 2009, they were approximately 4 grams each, and it wasn't until 12/2009 that I noticed other's geckos were much larger. In December 09 mine were both about 6 grams. The breeder I got them from had a hatch date of 11/17/08 which would have made them 1 year old -- everyone guessed they probably had the wrong date - or the wrong gecko's because they were way too small to be 1 year old. On 5/2/10 I weighed them again and Heebie is now 10 grams and Jeebie is 13 grams. Also at that same time I updated their tank to a 24H x 24W x 18D. Despite them being small and probably MUCH younger than expected - I never gave it much thought to their sex.... until now... Jeebie is starting to get a noticeable bulge . (Heebie has no such bulge) In the last few weeks I have also noticed that they stay on different sides of the tank, they used to snuggle together. SO, the questions I'm trying to get to are these: Is this the right size for them to develop 'The Bulge'? (since we really have no idea how old they are). What should I worry about with them possibly breeding? - I don't want babies. Is it okay to wait until they seem to be interested in breeding before I work on separation? Since my tank space is limited, could I divide the current tank in half and still give them enough room? (which is why I was thinking of waiting before trying to separate) Not to mention I JUST bought this darn tank! If I can divide the tank, is plexiglass ok? or should I use a thin plywood instead? Clear or opaque would be the issue. That's it for now, but don't worry - with every answer you know I'll have another question Thanks!