Or Equal Filter’s Whirligig Cleaner centrifugal separator, available as portable vacuum or stationary models, can clean the average sump or tower in about one hour. Wheeled, portable units feature a vacuum head, hose kit, tele-pole and manual blow-down valve; stationary units with automatic blow-down valve. Both remove particles as small as five microns and flush them manually or automatically. The 84-pound systems can be fitted with a bag filter to catch and dispose of them while conserving clean water by returning it to the source.www.whirligigcleaner.com(794) 906-5155