Glossary Of Swimming Pool Terms & Definitions - C | Print |
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CAL. HYPOCHLORITE Calcium Hypochlorite - A compound of chorline and calcium used as a disinfectant, sani- tizer, bactericide, algaecide and oxidizer in swimming pool and spa water. It is available as a white granular material usually used for superchlorination or it is available as tablets used in a feeder for regular chlorination. It usually contains 65% available chlorine.

CALCIUM CARBONATE Crystalline compounds formed in swimming pool and spa water when the calcium, pH and total alkalinity levels are too high. Once formed, the crystals adhere to the plumbing, equipment, pool walls and bottom. These crystals are better known as scale.

CALCIUM CHLORIDE A soluble white salt used to raise the calcium or total hardness level in the pool or spa.

CALCIUM HARDNESS The calcium content of the water. Calcium hardness is sometimes confused with the terms water hardness and total hardness. Too little calcium hardness and the water is corrosive. Too much calcium hardness and the water is scale forming. One of the basic water tests necessary to determine water balance. Minimum level is 150 ppm. Ideal range is 200 to 400 ppm.

CARTRIDGE A replaceable porous element made of paper or polyester used as the filter medium in cartridge filters.

CARTRIDGE FILTER A pool or spa water filter that uses a replaceable porous element made of paper or polyester.

CENTRIFUGAL PUMP A pump consisting of an impeller fixed on a rotating shaft and enclosed in a casing or volute and having an inlet and a discharge connection. The rotating impeller creates pressure in the water by the velocity derived from the centrifugal force.

CHECK VALVE A mechanical device in a pipe that permits the flow of water or air in one direction only.

CHELATE (Pronounced KEY-late) - also called sequester - It is the process of preventing metals in the water from combining with other components in water to form colored precipitates that stain the pool walls and bottom or produce colored water.

CHELATED COPPER Copper algaecides that contain a special ingredient to prevent the copper from staining the pool walls and bottom or producing colored water.

CHEMICAL FEEDER Any of several types of devices that dispense chemicals into the pool or spa water at a predetermined rate. Some dispense chlorine or bromine while others dispense pH-adjusting chemicals.

CHLOR. NEUTRALIZER A chemical used to make chlorine harmless. Used in test kits to counteract the bleach- ing effect of the chlorine or bromine in order to increase the accuracy of pool water tests. Sold as chlorine and bromine neu- tralizer, it is used to destroy excessive amounts of chlorine or bromine, so the high levels will not affect swimmers.

CHLORAMINES Undesirable, foul-smelling, body-irritating compounds formed when insufficient levels of free available chlorine react with ammonia and other nitrogen-containing compounds (swimmer and bather waste, fertilizer, perspiration, urine, etc.). Chloramines are still disinfectants, but they are a much weaker, ineffective form of chlorine. Chloamines are removed by superchlorination or shock treating.

CHLORINATOR A mechanical or electrical device for dispensing chlorine at a controlled rate. Most often a canister or floater filled with tablets of chlorine.

CHLORINE A term used to describe any type of chlorine compound used as a disinfectant in swimming pool and spa water or to kill, destroy or control bacteria and algae. In addition, chlorine oxidizes ammonia and nitrogen compounds (swimmer and bather waste).

CHLORINE DEMAND The amount of chlorine necessary to oxidize all organic matter (bacteria, algae, chloamines, ammonia and nitrogen compounds) in the pool or spa water.

CHLORINE ENHANCER A chemical compound that when used in conjunction with chlorine makes the chlorine perform better as an algaecide.

CHLORINE GENERATOR An electrical device that generates chlorine from a salt solution in a tank or from salt added to the pool water.

CHLORINE LOCK This is a term that implies that an over- abundance of cyanuric acid (stablizer or conditioner) in the water would cause the chlorine to be all "locked up." This is not true.

CHLORINE RESIDUAL The amount of chlorine left in the pool or spa water after the chlorine demand has been satisfied.

CLARIFIER Also called coagulant or flocculant - A chemical compound used to gather (coagulate or agglomerate), or to precipitate suspend- ed particles so they may be removed by vacuuming or filtration. The are two types; inorganic salts of aluminum (alum) or water- soluble organic polyelectrolytes.

CLARITY The degree of transparency of the water.

COAGULANT An organic polyelectrolyte used to gather (coagulate) suspended particles in the water.

COMBINED CHLORINE Undesirable, foul-smelling, body-irritating compounds formed when insufficient levels of free available chlorine react with ammonia and other nitrogen-containing compounds (swimmer and bather waste, fertilizer, perspiration, urine, etc.). Combined chlorine is still a disinfectant, but it is a much weaker, ineffective form of chlorine.

CONDITIONER Chemically, conditioner is cyanuric acid. It slows down the degradation of chlorine in the water by sunlight. Minimum level is 10 ppm. Too much does not slow down chlorine activity or effectiveness. Conditioner does not protect bromine from sun- light.

COPINGThe cap or top lip on the pool or spa wall that provides a finished edge around the pool or spa. It can be formed, cast in place or precast, or prefabricated of extruded aluminum or rigid vinyl. It may also be part of the system that secures a vinyl liner to the top of the pool wall.

COPPER It is one of nature's elements. It is also used for various parts of equipment and plumbing in swimming pools and spas. Corrosive water caused by misuse of chemicals, improper water balance, or placing trichlor tablets in the skimmer can cause copper to be dissolved from the equipment or plumbing and deposit the precipitates on hair, finger- nails or pool walls. High levels of copper also cause green water. Copper is also used as an algaecide. Maximum level is about 0.2 ppm.

COPPER ALGAECIDE A chemical compound that contains the element copper. Copper sulfate was one of the original copper algaecides. Too much copper in the water can cause green-colored stains. Newer copper algaecides contain an ingredient that prevents the copper from staining but does not affect copper's ability to kill algae. These special copper algaecides are called chelated copper algaecides.

CORROSION The etching, pitting or eating away of the pool or spa or equipment. Caused by improper water balance, misuse of acid or acidic products or from soft water.

COUPLING A plumbing fitting that is used to connect two pieces of pipe.

COVER, HARD-TOP A cover used on pools, spas and hot tubs that rests on the lip (coping) of the pool or spa deck - not a flotation cover. Used as a barrier to swimmers and bathers, and for maintenance and thermal protection.

COVER, SOLAR A cover that, when placed on the water's surface of a pool, spa or hot tub, increases the water temperature by absorption and transmission of solar radiation; reduces evaporation and prevents wine-borne debris from entering the water.

COVER, WINTER A cover that is secured around the perimeter of a pool, spa or hot tub that provides a barrier to bathers and debris when the pool, spa or hot tub is closed for the season.

CYANURIC ACID Also called condition and stabilizer - Chemically, conditioner is cyanuric acid. It protects chlorine in the water from being destroyed by sunlight. Minimum level is 10 ppm. Too much does not slow down chlorine activity or effectiveness. Does not protect bromine from sunlight.



 

Salt in Water

When salt is dissolved in water, the sodium and chlorine break apart to form free sodium ions and chloride ions. Effectively keeping your pool clean.

Baracuda G2

A Baracuda G2 has a 36 - finned disc.

Chlorine

The most common and effective sanitiser of swimming pools in the world is Chlorine.

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