IHey everybody. I am soon going to set up a 45 gallon rubbermaid "pond" to breed gambusia as feeders. The only thing stopping me is a pond pump/aerator to stop the water from become stagnant (summer) or freezing over (winter). The area where the pond will be is out of reach of wires, so I need something that is battery powered and fairly cheap. Any ideas? Also, I am setting this up in the next week or so, so I need answers ASAP!