The larvae are going to pig out 5 times a day (minimum). If you don't keep food constantly available, the larger ones will eat their smaller brothers and sisters. If possible, get some aquarium iodine. These crays will molt often at this age and iodine is necessary to aid them in molting.
These crays are omnivorous with a leaning more towards vegetable protein in their diet. I feed my crays a 50:50 mix of sinking commercial catfish pellets and rabbit pellets. You can also add a piece of driftwood so the crays can benefit from eating the surface bacteria laden softer wood.
As they grow, and if you start running out of room for them, they make great food for most large carnivorous fish. I cull a couple of thousand crays out a week to feed my puffers, lungfishes, polys, etc. My crays are clean, high protein, and gut-loaded so my fish really get a nutritious meal out of them.
So one of the Australian blue lobsters at work was carrying eggs three weeks ago when she came in. I watched them develop into babies, clinging underneath the mother, figuring she'd probably eat them when they let go. Today, hundreds of fully formed babies crawling around- so I pulled the mother out quick and threw some sinking pellets in, and the babies went on a feeding frenzy. Pretty cool. huh?
