Pool Chlorine Tablets

Pool Chlorine Tablets Measuring Methods and Standards for Delivery

Pool chlorine tablets are a long-term, low-toxicity, broad-spectrum, fast bactericidal disinfectant. They can strongly kill bacterial spores, bacterial propagules, fungi, and other pathogenic microorganisms. They also have a specific killing effect on hepatitis virus, epidemic liver virus, and can quickly kill and strongly inhibit blue-green algae, red algae, and other types of algae. This article explains in detail the use of chlorine tablets in swimming pools, including how to calculate the amount, how to add them, and how to adjust water quality, among other aspects.

Pool Chlorine Tablets

Question 1: How to calculate the amount of chlorine tablets?

First, calculate the volume of the pool and determine the number of chlorine tablets needed. In general, you need to add 1 to 2 grams of pool chlorine tablets per cubic meter of water. For example, if the volume of the pool is 50 cubic meters, you need to add 50 to 100 grams of pool chlorine tablets each time. The swimming pool should be added 0.5-1 hours in advance before opening, and the residual chlorine should be detected before adding, and then the dosage should be calculated according to the ratio that adding 2 kg of chlorine tablets per 1000 cubic meters can increase 1mg/L. For example: 500 cubic meters of swimming pool to increase 0.5mg/L, it is necessary to add 0.5 kg of chlorine tablets for disinfection.

Question 2: What is the correct way to put chlorine tablets?

In general, after the addition of disinfectants, disinfectants will certainly interact with the bacteria and algae in the water (it will also be consumed by a part of the organic matter in the water), each swimming pool due to the different water quality conditions, so the same number of chlorine tablets after the different swimming pools its measurable residual chlorine concentration is also different, the water quality is good, the remaining chlorine is high, the water quality is poor, the remaining chlorine is low. Therefore, it is recommended that when administering medicine at night, the dosage should be less than 2 kg /1000 cubic meters. If the water is already green or cloudy, add the chlorine tablets. Distribute the calculated chlorine tablets equally in the pool water, using either a pool chlorine dispenser or adding them manually. If added manually, divide the chlorine tablets into several parts and distribute them to different locations in the pool with a 15-minute interval.

Question 3: What is the standard for chlorine tablets?

  • General standard: The standard value of residual chlorine in swimming pools is 0.3 to 0.5mg/L, which is to ensure that the pool water is effectively disinfected and prevent the growth of bacteria.
  • Seasonal adjustment: When the ambient temperature exceeds 30 degrees Celsius, the use of chlorine tablets should be increased appropriately, adding 2 tablets for every 10 degrees Celsius.
  • Water quality adjustment:When the turbidity of the pool water exceeds the acceptable range, increase the use of chlorine tablets; the specific amount depends on the turbidity.
  • Number of swimmers: When the number of swimmers during peak hours exceeds 50% of the pool’s maximum capacity, increase the amount of chlorine tablets.

Question 4: What are the putting techniques of chlorine tablets?

In order to ensure the stability of water quality, you can add chlorine tablets at night, detect residual chlorine before use, and then calculate the dosage according to the formula of adding 2 kilograms per 1000 cubic meters or using 2g per cubic meter of water. There are 2g and 200g chlorine tablets available in the market. 2g tablets contain about 50% chlorine, dissolving quickly, suitable for daily disinfection; The 200g tablet contains about 90% chlorine, the dissolution rate is slow, but the performance is stable, and it is added once a few days.

Question 5: How to use chlorine tablets to regulate water quality?

Chlorine levels in swimming pools increase when chlorine is released from disinfectant tablets. The water quality needs to be adjusted based on the pool’s pH value. Generally, the pH should be controlled between 7.2 and 7.8 to ensure the best disinfection effect.


In general, the correct use of swimming pool disinfection tablets can ensure the cleanliness and hygiene of swimming pool water, thus protecting the health of swimmers. In use, it is necessary to pay attention to the calculation amount, the mode of delivery, water quality regulation and regular testing.