Everyone who has a pool will know the work involved in keeping the water clean. The PH can easily be changed by leaves, dust, dirt and insects that fall or are blown into the pool. So the task of cleaning it and maintaining the right PH is ongoing. However, robotic pool cleaners can do some of the work.
An kreepy krauly pool cleaner can be placed into the pool at night and left to do its job. All the debris will sink to the bottom where the cleaner can scrape or suck it up. That leaves the walls to be cleaned. These should be scrubbed down on a weekly basis so the algae that forms there will fall to the bottom and can be sucked out by the pool vacuum cleaner.