A Comprehensive Guide to Chlorine Systems for Beginners

Chlorine Systems

Do you own a swimming pool and are tired of constantly maintaining it? Are you considering installing a chlorine system, but have no idea where to start? Look no further! This guide will provide beginners with all the necessary information on chlorine systems.

What is Chlorine?

Chlorine is a chemical element that is commonly used in various industries such as water treatment, sanitation, and even in the production of paper and textiles. However, one of its most common uses is in swimming pools to keep them clean and free from harmful bacteria.

Types of Chlorine Systems

Three main types of chlorine systems are commonly used in swimming pools: liquid chlorine, granular chlorine, and tablet chlorine. Each type has its advantages and disadvantages, so it is important to understand them before deciding on the best option for your pool.

Liquid Chlorine

Liquid chlorine, also known as sodium hypochlorite, is a strong liquid form of chlorine that is added directly into the pool water. It is usually sold in plastic jugs and has a high concentration of chlorine. This type of chlorine system is fast-acting, meaning it quickly kills bacteria and algae in the pool, making it a popular choice among pool owners.

However, liquid chlorine can be corrosive and may damage pool equipment if not handled properly. It also has a shorter shelf life compared to other types of chlorine systems and must be stored in a cool, dry place.

Granular Chlorine

Granular chlorine is similar to its liquid counterpart, but it comes in a powdered form. It is also added directly into the pool water and is fast-acting. Unlike liquid chlorine, granular chlorine has a longer shelf life and can be stored for an extended period.

However, just like liquid chlorine, granular chlorine can also be corrosive to pool equipment if not handled properly. It also tends to dissolve quickly, so frequent testing and adjustments are needed to maintain the chlorine levels in the pool.

Tablet Chlorine

Tablet chlorine, also known as trichloro-S-triazinetrione or trichlor for short, is a slow-releasing type of chlorine. It comes in tablet form and is usually placed into a floating dispenser or an automatic feeder. This type of chlorine system is ideal for those who prefer a low-maintenance option as it only needs to be replaced every week or two, depending on the size of the pool.

One downside of tablet chlorine is that it contains stabilizers that can build up over time and cause imbalanced levels of cyanuric acid. This can lead to reduced effectiveness in killing bacteria and algae in the pool.

Proper Maintenance of Chlorine Systems

Whichever type of chlorine system you choose, proper maintenance is crucial in keeping your pool clean and safe.

Test and Adjust Chlorine Levels

Regularly testing and adjusting the chlorine levels in your pool is vital in maintaining its cleanliness. The ideal chlorine level should be between 1-3 ppm (parts per million). Too little chlorine can result in bacteria growth, while too much can cause skin irritation for swimmers.

Monitor pH Levels

In addition to chlorine levels, it is also essential to monitor the pH levels of your pool water. The ideal pH level should be between 7.2-7.6, as chlorine is most effective at this range.

Clean and Maintain Pool Equipment

Properly cleaning and maintaining your pool equipment, such as filters and pumps, can help prolong their lifespan and ensure they function correctly. It is also crucial to regularly check for any signs of corrosion from chlorine and replace equipment as needed.

Checking Pressure Levels

One helpful tool to have when maintaining a chlorine system is a digital pressure gauge. This device measures the pressure inside pool equipment, allowing you to monitor if there are any blockages or issues that may affect its performance. It is essential to regularly check the pressure levels of your pool equipment and make adjustments as needed.


Installing a chlorine system is an effective and popular method of keeping your pool clean and safe for swimmers. By understanding the different types of chlorine systems and properly maintaining them, you can enjoy a hassle-free swimming pool experience all summer long. Remember to always follow safety precautions when handling chlorine and consult with professionals if you have any concerns or questions.