The Pressure Pool Cleaner runs off a separate booster pump, working independently from the rest of your pool system. They will vacuum, sweep and scrub the bottom and walls of any size in-ground pool, be it concrete, fibreglass, tile and vinyl. The extra large bottom opening picks up large debris. The Polaris selection are one of the few cleaners powered by water pressure returning to your pool. Its unique filter bag removes any debris before it reaches your pump basket and filter. This alone can reduce filter cleanings by up to 80% a year, thus prolonging the life of your filtration system. The in-line back-up valve cycles automatically, pulling the cleaner away from potential obstacles and keeps the it cleaning without interruption.