I have bait minnows that I would like to keep alive till I use them next week.?

You keep minnows the same way you would keep a large aquarium full of tropical fish. The more water and the more fish you keep in the tank, the more air you will need to supply to keep them all alive and well. Go to ANY pet shop or the pet department in the bigger department stores and look for the books describing how to get started raising tropical fish. Most of the same information will apply to your bait. Do NOT over feed the fish as it sours the water and too much acid produced by their droppings can actually poison them. Goldfish are minnows and so the flake food for goldfish works just as well for bait minnows. Old chest freezers, washing machines, LARGE ice chests, galvanized wash tubs, fibergl utility sinks with single or double tubs, etc. and even livestock watering tanks can be easily converted into bait stations. You WILL need a mesh lid to keep bait from jumping out and birds and pets from jumping in. Keep the tank in a shaded and cool area so the water will stay comfortable for the fish. They prefer darker areas to bright sunlight also. With clean water and a good aerator, you should be able to keep minnows alive and well year round. (My grandfather kept all his minnows and frogs year 'round in a deep cistern-like well beside the house.) Good luck and good fishing.