For fast, thorough pool cleaning the energy-efficient way, count on the powerful Kreepy Krauly Legend II in-ground pool cleaner. This newly improved cleaner includes a host of patented design features that deliver powerful vacuuming performance and long service life without consuming any extra energy. It attaches to your return line and operates during your normal filtration cycle. The Legend II is one of Pentair's "greenest" and most efficient equipment choices. The powerful Legend II pressure-side automatic pool cleaner does not require a booster pump, providing highly energy-efficient cleaning performance.