Hi everyone! I just received 27 chicks from Murray McMurray Hatchery last week and all are happy and healthy - thanks to God! I have one question in regards to feeding my new chicks... How often should I change the feed placed in the feeder? They don't quite seem to finish it in one day, so I was wondering ...Can you keep feed in the feeder a couple of days before it goes stale or should it be thrown away every day and refilled just as you do with the waterers? Thanks!