Flowclear Automatic Vacuum Cleaner AquaSweeperThe Bestway Flowclear AquaSweeper Automatic Vacuum Cleaner is a patented design made specifically for above ground pools with low flow filtration systems. The aspirator consists of an integrated pre filter that collects debris, leaves and sand accumulated on the bottom of the tank before they reach the main filter, in order to extend its life and avoid obstruction. The clip system positioned on the lower part of the aspirator allows you to open and