Glossary
Definitions of key terms in the world of PP pools.
A
Algicide
Chemical agent for eliminating and preventing algae growth in pool water. Used preventively during the season or curatively when green water appears.
C
Chlorine
The most commonly used chemical agent for pool water disinfection. Available in granule, tablet or liquid form. Recommended concentration: 1–3 ppm.
D
Disinfection
Process of destroying bacteria, viruses and algae in pool water by chemical or physical methods. Chlorine or salt electrolysis are most commonly used.
F
Filtration
Physical process of removing solid impurities from water by passing it through a filter medium (sand, glass beads, diatomaceous earth). The foundation of a healthy pool.
H
Heat pump
Device that uses energy from the surrounding air to heat pool water. 3–5× more efficient than electric resistance heating. Ideal for PP pools in Serbian climate conditions.
P
pH value
Measure of water acidity or alkalinity on a scale of 0 to 14. Ideal value for a pool: 7.2–7.6. Low pH damages equipment; high pH reduces chlorine effectiveness.
Polypropylene (PP)
Thermoplastic polymer used to manufacture PP pools. Characterized by high chemical resistance, durability and excellent UV resistance when UV-stabilized.
S
Sand filter
Device using a layer of sand as a filter medium for mechanical water purification. Requires regular backwashing. The most popular filter type for residential pools.
Shock treatment
One-time application of a high dose of chlorine (3–5× normal) to eliminate algae, bacteria and chloramines. Pool should not be used for 24–48 hours after treatment.
Skimmer
Device built into the pool wall that collects debris (leaves, insects, oils) from the water surface. Key to water cleanliness and filter system efficiency.
W
Water circulation
Movement of water through the pump and filter system. Adequate circulation prevents stagnation, algae growth, and sediment accumulation.
Waterline
The pool zone at the boundary between water and air. Prone to accumulation of greasy deposits, algae and calcium scale. Requires regular cleaning with appropriate products.