Things might be alot different in Nebraska but down here a fiberglass bait tank is bought with a good aerater (the bubbling kind sitting in the water a bit from the top of the tank. The bubblers costs around $150 (guessing). I've also seen the concrete septic tanks used to hold bait in. In other words, it's an expense getting started. Then you need to find someone that sells minnows by the lb in case the ones you can catch arent the minnows of choice of the fishermen (and fisherwomen). Next...in this heat you may want the tank kept inside an air conditioned building. Lastly, you need to make yourself available for the daylight fishermen (around 5AM) and for the night time fishermen (@ 9PM)....and that's 7 days a week. Good luck with your new business.........and welcome from GEORGIA.
Health nuts are going to feel stupid someday, lying in hospitals dying of nothing.