When I fished the Pondhoppers (Bass fishing) we used regular coolers for livewells and just placed a 12volt aerator in the cooler and it would run all day..actually had it on a timer. That along with a basic (aa or aaa batt operated) stone aerator( on all the time) should be enough. Maybe some bait alive if you needed that extra boost. Throughout the day you could add lake water if you wanted.