it is suggested not to keep hatchlings together for this reason,the stress and the competition for food.it seems one of the hatchlings will alwalys dominate the others and the growth of the others will be slow or stunted.i keep my smaller day geckos in 32 oz. deli cup tall with a top that is uesd for fruit flies.i also include a piece of pothos and a piece of bark.this has worked best for me. good luck