Unless you are breeding mass quantities of Crestys I suggest keeping them seperately. If kept in groups as babys you will have food competition which often leaves one or more babys wanting more food, if they get any at all. It will be much easier to tell how much food each gecko is getting if they are seperated as well. Also you will not have the problem of the biting you describe which could result in lost tails or even death in extreme cases (rare). I keep all of my hatchlings, of all species, seperated when they are young. My Crested Geckos are all kept in small 2.5 gal "Critter Keepers" until they are big and strong and finding food well. More info can be found on my website if you are interested. The link is in my signature.
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Peace!
KofSeattle
Reptile-Like
Here lizard lizard.........

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