The SkimmerMotion is an automatic pool surface cleaner designed to eliminate small floating debris, likes dust, bugs, pollen. It moves around your pool, for faster results. As long as your pump is running, your skimmer will always keep working for you! The skimmer stays above your existing automatic pool cleaner and gives you that much needed surface cleaning. Please note that the SkimmerMotion will only pick up small leaves and debris less than 0.8" in size.