No pool is maintenance-free. Many pool owners use advanced pool-cleaning systems, such as automatic underwater vacuums, pumps and filters these days. But as swimming pool experts like to say, these automated systems are meant to keep a clean pool clean. If you let algae and pool grim really build up, you'll end up spending hours scrubbing by hand. So the trick to keeping pool cleaning to a minimum is to stay on top of it, even if you have an automated system.