Many pool owners have a love-hate relationship with chlorine; they love it because it keeps their pool free of hazardous bacteria, but they hate it because of the irritating side effects that it can cause. The key to keeping a clean pool and happy swimmers is maintaining the proper water chemistry and knowing which type of chlorine works best for you: liquid, granular or tablets.

How It Works
In order for chlorine to keep your water clean and minimize annoyances, such as skin irritation and a strong smell, it should consistently be kept between 1.0-2.0 ppm. Though there are different forms of chlorine for swimming pools, they all work similarly because the same chemical reaction is produced. When water and chlorine are mixed, two of the new compounds formed are hypochlorous and hydrochloric acids. The hypochlorous acid produced is what’s responsible for killing any algae and other microorganisms in the water.

Liquid Chlorine
This form is easy to use and makes for simple maintenance because all you need to do is pour it into the water while the pool filter is running. One thing to be cautious of is making sure the chlorine goes directly into the water without touching your pool’s parts, as the chemical can corrode metal. A way to avoid this is by using a mechanical chlorinator for dispensing. Sunlight helps chlorine dissolve and because this type is in liquid form, it rapidly dissolves into the water.

Granular Chlorine
There are two types of granular chlorine. The first, Di-chlor, has cyanuric acid which makes this chlorine last longer than any other un-stabilized granular types. The second, hypo-chlorites, has a higher pH and acidity level which means pool owners must monitor their pool after adding this chlorine. Granular chlorine is effective because it dissolves very quickly, however this is a pricey water chemical option.

Chlorine Tablets
This form of chlorine is mixed with cyanuric acid and is compacted into a small tablet. This option is very popular among pool owners. These tablets work by being placed into your water’s floaters and slowly dissolve to clean and protect the pool water for a longer period of time. There are a few things to be cautious of with this type of chlorine. First, be sure your water is balanced before adding the tablet. This is important because the tablets have a lower pH, so unbalanced water chemistry in addition to the chlorine can cause your pool to become cloudy. Also, never put these tablets directly into your pool water or in the skimmer box, as they can corrode and cause damage.

When handling chlorine, it is important to exercise caution. Always wear gloves to avoid direct skin contact and be sure to keep it away from your eyes. Each of these types of chlorine work to keep your pool clean, so the form you choose really comes down to your personal preference. If you have more questions about which type is right for you, feel free to contact the professionals at LinerWorld.