In light of its measly $1.2 million price tag the film's quality relative to bigger-budget horror films is striking.
It depends on the size of the pool. A normal size pool should have at least 2 skimmers. It depends on the size of the pool. A normal size pool should have at least 2 skimmers.
Clean the pool at least once per week. For a thorough cleaning, empty the skimmer baskets, skim the leaves and debris from the water. If there is debris on the bottom of the inground pool, use a vacuum cleaner designed for pool use. Skim the surface with a cleaning net.