Pool Info: Pool Glossary - Page 4
Pool Glossary (cont.)
CYANURIC ACID: A granular chemical added to the pool water which provides a shield to chlorine for protection from UV radiation, which disrupts the molecule, destroying its sanitizing ability.
EARTH: The filtering medium
of the DE filter, this dry powder is
the fossilized remains of the ancient
EARTH FILTER: A filter tank
containing fabric covered grids which
hold the DE powder up against the flow
of the water.
DICHLORO-S-TRIAZINETRIONE: a chemical compound. It is an oxidizer, bacteriocide, algicide, and cleaning agent that reacts with water to form hypochlorous acid, which is related to bleach.
DISINFECTANT: Chemicals or processes which work to destroy vegetative forms of microorganisms and other contaminants. Examples are chlorine, bromine, Soft-Swim, and ionizers; also included are copper and silver algaecides.
DIRECTIONS: What you should read before using any chemicals.
DEMAND: The demand that your
pool has for dirt. This level is
inversely proportional to available time
for cleaning. If you remove the dirt
from the pool, you have created a dirt
deficit, and the pool will actually suck
dirt out of the air to maintain its dirt
method of testing for chlorine levels
in the pool water. Unlike OTO,
DPD testing allows determination of total
and free available chlorine levels which
through subtraction gives us combined
DRY ACID: Sodium bisulfate, a granular form of acid used to lower pH and alkalinity in the water. It is safer and less caustic than muriatic acid. Usually available as a "pH decreaser."
power to produce an effect. Chlorine's
efficacy is affected by many factors,
including the sun, water balance, and
the water's chlorine demand.
water that flows out of the pump on
its way through the filter, heating,
and then returning to the pool. Also
known as the pressure side.
electrolysis: A method of separating chemically bonded elements and compounds by passing an electric current through them.
ENZYMES: Used in swimming pool formulations designed to break down and digest oils in a pool or spa similar to the way enzymes are used in oil spill clean-up efforts.
WATER: Used in filling or
adding to the water level. Whether
from the hose or from a well, your
fill water brings its own chemical
make up and water balance (or lack
FILM-X: A compound of citric acid used in cleaning plaster and other pool areas. Safe replacement for muriatic acid.
FOAMING: A term used to describe surface foam on your water, esp. in spas/hot tubs. Foaming is caused by high TDS levels working in combination with soft water and oils. Certain low grade algaecides can foam when added to pool or spa. Use enzymes for foam control.
FLOCCULENT: Essentially the same as a coagulant, this chemical (such as alum) is used to combined suspended alkaline material and/or algae into a heavy gel, which sinks to the bottom for vacuuming to waste.