The Ultra Max, Power Vac, Aquamax. The world's leader in commercial pool cleaning. Pay for themselves in as little as 3 months or less. Work without labor, hoses, filter connections, or external pumps, Automatically scrub, power wash, vacuum and microfilter. Clean any pool size, shape, or surfact type, Remove large leaves, heavy sand, fine silt, algea and bacteria with up to 20 times finer filtration than sand filters, Touch-button operation, half the weight of other cleaners, no hoses.