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.
Think of a pool skimmer in a residential swimming pool like you would a gutter in a larger public swimming pool: it helps clean by skimming water and capturing floating debris: leaves, flower petals, dirt, twigs, dead insects, and oil (sunblock) -- before the waste can sink to the pool's bottom.