How do you keep minnows alive for fishing?

you get a large bucket with a lid. Then go to a bait and tackle store and buy a bubble box.(they cost about $10 and take 2 d batteries to work)After you get this you need to somehow attach the box to the side of the bucket and then put the blue ball that is attached to the box by a hose in the water and turn it on this will create oxygen in the water so the minnows can breath. This will work with all live bait to keep them alive. Hope this helped and good luck fishing.