Description
What do chlorine and bromine do?
These chemicals kill bacteria, viruses, and algae to keep pool water sanitized.
What is disinfection?
Main purpose of chlorine in pools
What are red eyes and skin irritation caused by?
Caused by chloramines in pools
What kills harmful microorganisms?
This is what chlorine primarily does in pool water.
What is the ideal free chlorine range in pool water.
1–3 ppm
What is sodium hypochlorite and what is it used for?
Liquid form of chlorine used to disinfect water
What is hypochlorous acid (HClO)?
It is a compound produced by chlorine that kills microorganisms
What could affect/cause asthma or breathing problems?
Long-term exposure to chlorine fumes can increase the risk of this condition.
What causes the strong “pool smell”at swimming pools?
Chloramines
What is the proper pH range for pool water
7.2–7.8
What is cyanuric acid and what does it do?
It is a chemical that protects chlorine from sunlight
What is the process where HClO breaks down harmful cell structures?
Killing microorganisms / disinfection?
What is muriatic acid's risks?
Mixing chlorine with this chemical can release toxic chlorine gas that irritate and damage the respiratory system when inhaled.
What are chloramines formed from?
Chlorine reacts with ammonia from sweat and urine to form these.
What is the ideal total alkalinity range?
80–120 ppm
What is sodium carbonate and what does it do?
It is a chemical that raises pH when water is too acidic
What is blocking photosynthesis in algae?
Chlorine prevents this by blocking photosynthesis, keeping water clear.
What is corrosion and its risks?
This happens to metal fixtures if pool water becomes too acidic and causes itchy skin and burning eyes for swimmers.
What is photosynthesis blocked by and why?
Chlorine blocks this process in algae to prevent growth.
What are used to measure chemical levels in pools?
Test kits or digital testers
What is muriatic acid and what does it do?
It is a chemical used to lower pH when water is too basic
What is continuous activity and full-pool distribution?
Allows chlorine to remain active throughout the entire pool, unlike UV systems.
What are trihalomethanes and how are they formed (THMs)?
These carcinogenic compounds can form when chlorine reacts with organic matter.
What is a key reason chlorine is more practical than UV systems.
A key reason is continuous regeneration and lower cost.
What process involves testing and adjusting chemicals to maintain safe levels.
The chemical balancing process