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Glossary

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 

Feeder: Mechanism that applies or distributes chemicals to swimming pools and spas (See Chlorinator/Brominator and Chlorine/Bromine Feeder). Product suggestions: Above-Ground In-Line Chlorinator, Floating Derby Duck Chlorinator, Large Chlorinator.

Fill Water: Used when filling or adding to the pool or spa's water level. Whether from the hose or from a well, your fill water adds a different chemical make up and water balance (or lack thereof).

Filter: Pool Filter is a device that removes solid particles and debris from pool water by circulating water through a porous substance or surface. Cartridge Filter: Uses a porous element and is disposable. Diatomaceous Earth Filter: Utilizes a thin layer of diatomaceous earth as its filter medium that periodically must be replaced. Permanent-medium Filter: Uses a permanent substance like sand that under normal circumstances, will not have to be replaced. Vacuum Filter: Uses suction from a pump to filter through a vacuum.

Filter Agitation: A mechanical or manual movement to dislodge the filter dirt and aid from the filter element.

Filter Cycle: The time it takes a filter to clean or backwash the pool water.

Filter Element: A device within a pool filter that traps solids and conducts water back to the pool or spa. An element usually includes laterals, a septum, septum support, or a cartridge.

Filter Medium: Finely graded material that removes particles from the pool water. Variations include sand, DE, or polyester fabric.

Filter Pump: The device that pulls water from the pool and pushes it through the pool filter on its way back to the pool. Product suggestions: Sta-Rite Pump, Hayward Super Pump.

Fingers: Thin flexible tubes that are placed vertically on a DE filter grid. They are coated with a thin "sock", and then with DE medium.

Foaming: A term used to describe surface foam on your pool water, especially in spas/hot tubs. Foaming is caused by high TDS levels working in combination with soft water and oils. Use enzymes for foam control. Note: Certain low grade algaecides can foam when added to your pool or spa.

Free Chlorine: The portion of chlorine that is actually available to kill bacteria in the pool. This does not include chloramines or chlorine used up by the sun's rays.