![]() Also simply called “Trichlor”, this comes in powder and sometimes tablet or granular form, and it contains around 90% available chlorine. Unlike Lithium Trichlor (below), this type slightly reduces the pH and total alkalinity of your pool water. Also simply called “Dichlor”, this comes in granular form and contains around 56-62% available chlorine. This time there are only 2 different chlorine compounds you can buy that fall into the stabilized category: It’s easier to manage but you still need to watch your cyanuric acid levels.It has a slow burn-rate when exposed to the sun.If your acid levels spike, you’ll also need more chlorine to keep your chemicals balanced and working efficiently. Speaking of dosages, however, you’ll still need to keep a close eye on your cyanuric acid levels over time. You guessed it, stabilized chlorine is chlorine that has been mixed with cyanuric acid (CYA), protecting your chlorine from the sun’s ultra-violet (UV) rays which decreases the overall burn-rate of your dosage.Īgain, the added acid is only important for swimming pools that are frequently exposed to the sun, and having it mixed in with your chlorine just makes your life easier when it comes to dosages. Also called “Calcium Hypo”, this comes in granular or tablet form and contains around 60% available chlorine. ![]() It is, however, a little on the pricey side compared to other types. It has a fast dissolve-rate which makes it good for shocking, but also prevents a bleaching effect on vinyl and fibreglass pools. Also called “Lithium Hypo”, this comes in granular form and contains around 35% available chlorine. It’s typically added to pools through a chemical feeder and is most commonly used in large/commercial pools since it can be easily added in large volumes. Also called “Sodium Hypo”, this comes in liquid form and contains around 10-12% available chlorine. To further complicate things, there are 3 different chlorine compounds you can buy that fall into the unstabilized category: It can be used to shock your pool or for top ups.It’s typically used with indoor or shaded pools.It has a fast burn-rate when exposed to the sun.Besides, there’s nothing stopping you from adding cyanuric acid to your pool if needed.įinally, since this type of chlorine has a shorter lifespan than stabalized chlorine, it can also be used in large doses to shock your pool, or even as an emergency top up to quickly restore falling chlorine levels. Since not all swimming pools are outdoors or exposed to the sun, unstabilized chlorine can be used to the same effect in the right circumstances. ![]() Unstabilized chlorine is chlorine that has not been mixed with cyanuric acid (CYA), a chemical that shields your chlorine from the sun’s ultra-violet (UV) rays which decreases the overall burn-rate of your dosage. Without turning this into a chemistry lesson, I’d like to cover the basics when it comes to the different types of chlorine, and more importantly what each one means for you as a swimming pool owner. Whether you choose to go with tablet, powdered or liquid chlorine, know that these come in either unstabilized and stabilized variants. This is a popular option for larger, commercial pools because it can be quickly added in large quantities. Liquid chlorine is typically the cheapest option and is poured directly into the pool, but with pH level of around 13 it does require careful balancing of your pool water which can increase costs. This is a more hands on approach, but it also gives you more granular (pun intended) control over your chlorine levels. Powdered chlorine is also referred to as “chlorine granules” and is either sprinkled evenly into your pool, or dissolved in a separate container before being poured into your pool water. Tablets can also contain other helpful substances such as algaecide and water clarifier, removing the need to purchase and add these independently. This makes it the easiest form of chlorine to use, and the one we recommend to most domestic pool owners. Combined chlorine is also known as chloramine.Ĭhlorine tablets are typically used with a dispenser that allows them to be released into your pool consistently over time. Once the chlorine is added to your water, it forms a new substance called ‘hydrochloric acid’ which disables harmful bacteria, viruses and other microscopic dangers by combining with them. So far so simple, but how does it actually work? ![]()
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