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.
You should monitor the water level in your swimming pool to maintain a level that is 1/2 up on the skimmer opening. If the water level drops below these levels the pump may begin to draw air and cavitate, possibly causing damage to the pump by allowing it to run dry. All swimming pool skimmers have a weir door.