Difference Between Pool Clarifier and Flocculant

A swimming pool has to be kept clean, a task that all pool owners are aware of. But cleaning the large debris that falls into the pool yourself or letting the robotic pool cleaner handle removing the debris that gathers in the water isn’t enough as bacteria and other types of contaminants could still be present in the water, making it unsafe for you to swim in it. The worst part is that these contaminants lead to the appearance of algae, and they can even cause the water to become cloudy.

What you need to do is to use chemicals to maintain the proper chemical balance of the water and to ensure that it will remain clear and clean, the most commonly used chemicals for treating pool water being the clarifier and the flocculant. To make it easier for you to understand how each of these solutions works and what is the proper chemical to go with for your pool, we will talk about each one of them more in the following, underlining the main differences between them by doing so.

Swimming Pool Clarifiers

The pool’s filter is the component that plays the role of clearing up the water, but this doesn’t mean that it should be left alone when dealing with this task. For the best results possible, the addition of a pool clarifier is required. These chemicals play the role of helping the filter pick up the small particles that cause the water to become cloudy through the process of coagulation. What this process consists of is taking the small particles and bringing them together so that they become larger, thus the filter being capable of catching them and maximizing its efficiency as well.

Obviously, since the chemical helps the pool filter more effectively do its job, you must run the filter when adding it into the water. In case the swimming pool water has turned cloudy, we recommend that you add the clarified and run the pool 24 hours per day until the water becomes clear, adding more of the chemical once per day. What you will love about this chemical is the fact that you can swim in the water even after you have added it, so as long as you don’t mind the cloudy aspect of the water, you can safely use the swimming pool.

  • When to Use the Clarifier

The clarifier is the perfect go-to solution when the water is a little cloudy as it doesn’t require a lot of work on your part. Also, after inserting the chemical into the pool’s water, you don’t have to replenish chlorine or any other chemicals, and you don’t have to replace the water either, so there’s no hassle involved with this water clearing method. In case the water is very cloudy, it’s best for you to stay away from swimming in it until the chemical does its job and clears it up.

Swimming Pool Flocculants

The pool flocculant has become the most popular option for clearing cloudy pool water as it is extremely fast. The chemical works by taking the particles that are causing the cloudy aspect of the pool and sinking them to the bottom. What you need to do to clear up the pool’s water with this chemical is to add it into the water and let the pool run for at least 2 hours. Afterward, shut the pool off completely overnight or for at least 8 hours.

When the time passes, you will notice a cloud at the bottom of the pool, the cloud consisting of the particles that caused the unhealthy aspect of the water. Now, you simply have to vacuum the bottom of the pool yourself or let the robot pool cleaner handle this task in case you own such a robotic device. If you vacuum the pool, a few passes will be needed to get rid of all the debris at the bottom of the pool, but it won’t be too difficult to get rid of it.

  • When to Use the Flocculant

The pool floc is the perfect solution to turn to when you need the pool to be clear and clean fast. It might require a small amount of effort on your part, but it’s a lot faster when compared to using a pool clarifier. After all, the floc hasn’t become the more popular option without a good reason, its speed being and high efficiency making it the preferred water clearing choice of many pool owners.


It’s difficult if not impossible to recommend only one of these clearing chemicals as they both work very well, being capable of doing a perfect job at removing the cloudy aspect of the pool and making the water look perfect once again. Thus, you have to take this decision on your own, being best for you to consider the fact that the main difference between the clarifier and the flocculant is the time that it takes for the chemicals to finish their tasks.

The flocculant is indeed the faster solution but it requires you to interfere at the end by vacuuming the pool, while the clarifier is slower but it doesn’t need you to do anything at all except to put it in the water and run the filter. Choosing between the two chemicals is a matter of personal preference and need, depending on the situation, so now that you know more about both of them, you will be able to take a proper decision when the pool gets cloudy and you need to clear it.