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Feb 23, 2024

How Much Chlorine to Add to Your Pool

Maintaining the right chlorine levels in your pool is crucial for keeping the water clean and safe for swimming. Here's everything you need to know about how much chlorine to add to your pool.

Understanding Chlorine

Chlorine is a chemical commonly used to sanitize pool water and kill harmful bacteria and algae. It comes in various forms, including liquid chlorine, granular chlorine, and chlorine tablets.

Calculating Chlorine Dosage

The amount of chlorine you need to add to your pool depends on factors such as pool size, current chlorine levels, and water temperature. A general rule of thumb is to aim for a chlorine concentration of 1-3 parts per million (ppm) in your pool.

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Pool Size and Chlorine Requirements

For small pools, such as inflatable or above-ground pools, adding liquid chlorine can be straightforward. Measure the pool's volume in gallons or liters and use a pool calculator to determine the appropriate amount of chlorine to add.

For larger pools, such as inground pools, calculating chlorine dosage can be more complex. Factors like bather load, sunlight exposure, and weather conditions can affect chlorine demand. Regular testing and adjustment are essential for maintaining optimal chlorine levels.

Types of Chlorine and Application Methods

Liquid chlorine is a popular choice for pool owners due to its convenience and fast-acting nature. It can be poured directly into the pool or added via an automatic feeder or chlorinator system.

Granular chlorine is another option, but it requires pre-dissolving in a bucket of water before adding it to the pool. Chlorine tablets are convenient but should be used with caution to avoid over-chlorination and damage to pool surfaces.

Monitoring Chlorine Levels

Regularly testing your pool water is crucial for ensuring proper chlorine levels. Use a reliable test kit to measure chlorine, pH, alkalinity, and other essential parameters. Aim to test your pool water at least once or twice a week, especially during periods of heavy use or hot weather.

Adjusting Chlorine Dosage

If your chlorine levels are too low, add more chlorine to bring them into the optimal range. If levels are too high, you may need to dilute the water or wait for chlorine levels to naturally decrease over time. Follow manufacturer instructions and safety precautions when handling and adding chlorine to your pool.

Maintaining Proper Chlorine Levels

In addition to regular chlorine dosing, proper pool maintenance is essential for keeping chlorine levels stable. This includes routine cleaning, brushing, and backwashing of the pool filter. Ensure adequate water circulation and filtration to distribute chlorine evenly throughout the pool.

Safety Precautions

When handling chlorine, always wear appropriate protective gear, such as gloves and goggles, to avoid skin and eye irritation. Store chlorine products in a cool, dry place away from direct sunlight and moisture. Keep out of reach of children and pets.

Maintaining the right chlorine levels in your pool is essential for ensuring a safe and enjoyable swimming experience. By understanding how to calculate chlorine dosage, choose the right chlorine products, and monitor water quality, you can keep your pool clean, clear, and inviting all season long. Regular testing, adjustment, and proper maintenance are key to achieving and maintaining optimal chlorine levels in your pool.

Reach out to our team for the best prices and expert opinions at or call us at 02 9137 8914.

About Pool Shop

Pool Shop is one of Australia's leading suppliers of pool and spa products, offering a wide range of essentials like cleaners, pumps, lights, chlorinators, filters, chemicals, spare parts, and more. We stock the highest quality products as authorised sellers of leading brands such as Zodiac, Astral Pool, Maytronics, Hayward, Madimack, Polaris, Pentair Onga and more. With a price match guarantee and fast delivery, we ensure a seamless shopping experience.

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