A couple of suggetions, if possible devote a 20-30 gal. tank for grow out. Use a sponge filter, or cut up a brine shrimp net so that you can cover the intake on a power filter by attaching it with a rubber band, also use water from the parent tank and maintain the same temp. I've raised out jacks and devils this way. Also for food you can use fresh hatched brine shrimp or the yolk from hard-boiled eggs mashed into the tiniest pieces you can manage.