Brush the walls every week during swimming season while the pump is turned off. A vacuum removes the debris that collects on the bottom. Vacuuming requires moving the vacuum head over the debris on the bottom of the pool until the bottom appears clean.
A nylon or rubber brush is the correct choice for scrubbing the sides of a soft-sided above-ground pool. A large pool brush makes quick work of the job, but you may need a smaller brush to clean corners. Once the particles have been removed from the sides of the pool, turn your filter back on and agitate the water.
Since brown algae is extremely chlorine-resistant, several other chemicals such as shock and an algaecide specifically designed for mustard algae will help get rid of the infestation. This will often result in cloudy pool water, so use clarifier to correct this problem.
If dirt is reappearing at the bottom of your swimming pool after you've vacuumed it your pool's filter may be working poorly. Pool filters often work poorly because they're in need of cleaning. If you have a sand filter for your pool you need to make sure that the sand is sharp and freshened up.
A shop vac can be used to clean a pool. They are different from your regular vacuums as they can suck up liquids, which makes them good cleaning equipment for pools. They however need to be adjusted for vacuuming water first.