As we all know, trichloroisocyanuric acid (TCCA) is a slow dissolving chlorine disinfectant that plays a crucial role in water treatment. But do you know that TCCA chemical is the main component in multi action chlorine tablets? In this article, we will talk about everything about multi action chlorine tablets.
Related article: What is TCCA and How is it Really Used?
What Are Multi Action Chlorine Tablets
Multi action chlorine tablets, also known as multifunctional chlorine tablets, are a convenient and efficient solution for maintaining crystal-clear and safe swimming pool water. These tablets typically combine several essential functions in one product, making pool maintenance simpler and more effective.
When making multi action chlorine tablets, aluminum sulfate, copper sulfate and other additives are added, which can have limited clarification, algae-killing and other functions.
What Can Multi Action Chlorine Tablets Do for Pool Water
01/ Sanitization and Disinfection
The primary role of multi action chlorine tablets is to sanitize and disinfect pool water. The TCCA chemical in these tablets release chlorine steadily over time, eliminating harmful microorganisms such as bacteria, algae, and viruses. This ensures that the water is safe for swimmers and free from contaminants that can cause skin or eye irritations. Meanwhile, multi action chlorine tablets made with TCCA chemical contain cyanuric acid (CYA), which acts as a stabilizer to protect chlorine from degradation caused by ultraviolet (UV) rays. This makes them particularly effective for outdoor pools, as the stabilized chlorine maintains its disinfecting power even under direct sunlight.
02/ Water Clarification
Multi action chlorine tablets have the auxiliary function to water clarification, because these tablets often contain clarifying agents that help remove fine particles from the water. By promoting the coagulation of microscopic debris, they enhance filtration efficiency and result in sparkling clear pool water.

03/ Algae Prevention
Similarly, multi action chlorine tablets also have an auxiliary effect on algae prevention. Algae growth is a common issue in swimming pools, particularly in warmer climates or during periods of heavy use. Multi action chlorine tablets often include the function of algaecides that work alongside TCCA chemical to inhibit the growth of algae, preventing green or cloudy water.
It should be noted that multi action chlorine tablets are only auxiliary to water purification and algae prevention. If your pool requires clarification or elimination of algae, specialized clarifiers and algaecides are needed. Please feel free to contact us for a quotation.
04/ pH Stabilization
Some multi action chlorine tablets are formulated to include pH buffers, which stabilize the pool's pH levels, ensuring the chlorine remains effective. Maintaining an optimal pH range (usually 7.2–7.6) is crucial for maximizing disinfectant performance and providing a comfortable swimming environment.
How to Use Multi Action Chlorine Tablets
Using multi action chlorine tablets is straightforward. Typically, these tablets are added to a pool skimmer, floating dispenser, or an automatic chlorinator, where they dissolve slowly and release their active ingredients over time. This controlled release ensures a consistent level of chlorine in the water, reducing the need for frequent manual adjustments.



Notes: The number of tablets required depends on the size of the pool, its current water condition, and its usage frequency. Regular testing of chlorine levels, pH, and cyanuric acid is essential to ensure proper water balance.
It can be seen that multi action chlorine tablets are excellent disinfectants for maintaining clean and safe swimming pool water. They simplify the pool maintenance process by combining disinfection, water clarification, algae prevention and pH stabilization into a single product. We are a leading supplier of multi action chlorine tablets in China. If you need multi action chlorine tablets or other swimming pool chemicals, welcome to contact us.
