i keep mine in kritter keepers of various sizes until they are at least around 20 grams. if i had more of those enclosures i might house groups of juvies in them but i think i'd still wait until they are around 15 grams. if you want to put them in earlier just keep an eye on them to make sure that they are finding their food. some people say small enclosure for small gecko, but my very first cresteds were housed in a 20 gallon tall as juvies and they all did just fine finding food so it may just depend on the gecko.