Trichlor Vs Dichlor Vs Cal Hypo: Choosing the Right Chlorine for Your Pool

Swimming pool maintenance requires the use of various chemicals to ensure that the water is safe and clean for swimmers. Three common chemicals used in pool maintenance are trichlor, dichlor, and calcium hypochlorite (cal hypo).

Each of these chemicals has its own unique properties, advantages, and disadvantages. In this article, we will discuss the differences between trichlor, dichlor, and cal hypo, and highlight which chemical is best suited for various pool maintenance tasks.

Trichlor Vs Dichlor Vs Cal Hypo: Choosing the Right Chlorine for Your Pool



Trichlor is a popular form of chlorine used for swimming pools and spas. It is a stabilized chlorine that comes in the form of tablets or granules. Trichlor offers several benefits, such as providing long-lasting sanitation, controlling algae growth, and being affordable.

However, there are also some drawbacks to using trichlor, such as its slow-dissolving nature and high level of acidity. All things considered, trichlor can be a great option for pool owners who want a reliable and cost-effective method of keeping their pool clean.

It is important to follow safety precautions when handling trichlor, such as wearing gloves and avoiding inhalation of the chemicals. When compared to other types of chlorine, such as dichlor and cal hypo, trichlor is a convenient option that requires less frequent application.


Dichlor is a type of chlorine commonly used for swimming pool maintenance. Compared to trichlor and cal hypo, it has a lower ph level, making it less harsh for swimmers and pool equipment. One advantage of using dichlor is that it dissolves quickly and is ideal for shock treatment.

However, since it contains both chlorine and stabilizer, it can potentially cause over-stabilization and increase cyanuric acid levels over time. It’s important to handle dichlor with care and avoid contact with skin or eyes. Always follow the manufacturer’s instructions and keep it stored in a dry, cool place.

Overall, dichlor is a reliable choice for regular pool maintenance and should be considered in your chlorine selection process.

Di-Chlor vs Cal-Hypo : What is best to shock your pool?

Cal Hypo

Cal hypo is a form of chlorine used for swimming pool maintenance. It is a white, powdery substance that dissolves easily in water. One of the main advantages of cal hypo is its effectiveness in killing bacteria and other harmful organisms in swimming pools.

However, it can be expensive compared to other forms of chlorine and has a shorter shelf life. When using cal hypo, it is important to take safety precautions such as wearing gloves and goggles as it can be irritating to the skin and eyes.

It is also important to handle and store cal hypo properly to prevent any accidents. In comparison to trichlor and dichlor, cal hypo may require more frequent dosing but provides quicker results.

Which Chlorine Is Right For You?

When it comes to keeping your pool clean and safe for swimming, choosing the right type of chlorine for your specific needs is crucial. There are three main types of chlorine: trichlor, dichlor, and cal hypo. Each has its own unique benefits and drawbacks, and knowing which one to choose requires careful consideration of a few important factors.

These include the type of pool you have, the environment it’s in, and any special considerations like saltwater or chlorine-free systems. Depending on these factors, certain types of chlorine may be more effective or efficient than others. By weighing your options carefully and taking these factors into account, you can choose the best chlorine type for your pool and keep your water crystal clear all season long.

Frequently Asked Questions On Trichlor Vs Dichlor Vs Cal Hypo

What Is Trichlor And What Is It Used For?

Trichlor is a form of chlorine used as a sanitizer for swimming pools and spas. It contains 90% chlorine and has a slow dissolving rate.

What Is Dichlor And What Is It Used For?

Dichlor is also a form of chlorine used as a sanitizer for swimming pools and spas. It contains 56% chlorine and has a fast dissolving rate.

What Is Cal Hypo And What Is It Used For?

Cal hypo is short for calcium hypochlorite, another form of chlorine used as a sanitizer for swimming pools and hot tubs. It contains 65-75% chlorine and has a quick dissolving rate.

How Do Trichlor, Dichlor, And Cal Hypo Differ From Each Other?

Trichlor has a higher percentage of chlorine and a slower dissolving rate, dichlor has a lower percentage of chlorine and a faster dissolving rate, and cal hypo contains calcium and has the quickest dissolving rate.


Trichlor, dichlor, and cal hypo are all effective options for chlorinating swimming pools. Trichlor is a slow-dissolving tablet that is long-lasting and easy to use. Dichlor dissolves quickly in water and is good for shock treatments. Cal hypo is a fast-acting granular or tablet form of chlorine that is great for quickly raising the chlorine levels in the pool.

Ultimately, the choice between these three options will depend on personal preferences and specific pool needs. It is important to carefully consider the pros and cons of each option before making a decision.

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