Understanding Dichlor Chlorine Granules

Introduction to Dichlor Chlorine Granules

Dichlor chlorine granules are a popular and effective means of sanitizing and maintaining the cleanliness of swimming pools and spas. These granules consist primarily of dichloroisocyanuric acid, a compound known for its stability and relatively neutral pH level. Unlike other chlorine products that can significantly alter water chemistry, dichlor granules minimize fluctuations in pH levels, making them ideal for regular pool maintenance.

Key Benefits and Features

Effective Sanitization

The primary use of dichlor chlorine granules is to kill bacteria and algae in pool water. Their high chlorine content, usually about 55-62% available chlorine, ensures rapid and effective sanitization. This level of concentration means a smaller quantity is needed compared to other forms of chlorine, making dichlor granules a cost-effective choice.

Stability and Longevity

Dichlor granules are known for their stability. They do not degrade quickly under sunlight due to the presence of cyanuric acid in their composition. This stability extends the longevity of the chlorine in the water, ensuring sustained sanitization over a longer period and reducing the frequency of reapplication.

Neutral pH

One of the advantages of dichlor granules is their neutral pH level. When added to pool water, they do not cause significant changes in water pH, unlike other chlorine products that can make the water either too acidic or too alkaline. This feature helps maintain a balanced water chemistry, reducing the need for additional chemicals to adjust pH levels.

Practical Usage and Considerations

Application Process

To use dichlor granules effectively, measure the appropriate amount based on the volume of water in the pool or spa. Distribute the granules evenly across the water surface. It's advisable to apply them during periods of low pool usage, such as in the evening, to maximize their effectiveness and ensure user safety.

Cost and Efficiency

The cost of dichlor granules can vary depending on the brand and quantity. However, their high chlorine content and extended effectiveness often result in lower overall costs in the long run. By reducing the frequency of application and the amount needed, dichlor granules offer an efficient and budget-friendly solution for pool maintenance.

Potential Downsides

While dichlor granules have many advantages, it is important to be aware of potential downsides. Overuse can lead to a buildup of cyanuric acid in the water, which can reduce the effectiveness of chlorine. Regular testing of water chemistry is essential to ensure balanced levels of cyanuric acid and chlorine.


Dichlor chlorine granules are a versatile and efficient solution for maintaining clean and sanitary pool and spa water. Their stability, cost-effectiveness, and neutral pH make them a preferred choice for many pool owners. By understanding their features and proper usage, one can effectively utilize these granules to ensure a safe and enjoyable swimming experience.

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