I am new to ponds. I put my preformed pond in the ground last summer and purchased a solar pump for it. It worked fine during the day when the sun was out. As soon as the sun went away, it stopped working. This year I am putting the pond closer to the house so I can have an electric pump. What I need help with is what pump to purchase? I don't want to spend too much either. It is approximately 100 gallons. Any help would be appreciated. Thanks!