i have a storage tank made from a 55 gal. plastic drum. its filtered and aerated with a yard pond pump that runs off ac. ive been using it for a year and half now. if i keep the filter clean, the water stays clear and the minnows alive. ive been keeping minnows with no problem.. i never feed em. they feed on the dead ones that sink to the bottom. the ones that die and float i scoop out occasionally. i usually have a few die after i come back from a trip. i figger its minnows that was stressed out cause of being toted around in minnow buckets. if u do a lot of crappie fishing, id reccomend you fix you up a storage tank. it will pay off with minnows saved and reused.
listen with your eyes---its the only way to beleive what you hear...