Proper chlorine levels in your pool are very important. It keeps your pool healthy and removes bacteria from your pool. But how much chlorine should you add and how often?
Preparation
First of all, it is important to know how much chlorine should be in your pool. For outdoor pools, a chlorine level between 0.5 and 3 ppm is good. For indoor pools, chlorine levels should be between 0.5 and 1.5 ppm. For spas, then again, between 1 and 3 ppm is the perfect level. PPM is short for Parts Per Million, which translates to 1 mg per litre of pool water (0.001g/l).
Always make sure the pH level is between 7.2 and 7.6 first, otherwise the chlorine will not work. Measuring pH and chlorine levels can be done with test strips, test kits or a digital meter.
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How often should I measure and add my chlorine?
It is important to first know how much chlorine is in your pool. Have you just refilled, has it just been winter or has there been a heavy downpour? Then first add a chlorine shock tablet, which will boost the chlorine level.
If you don't use your pool often, it's enough to measure your pH and chlorine once a week. If you use the pool a lot, it's best to do this 2 - 3 times a week.
Adding chlorine to the water should be done regularly. If the weather is cold and the pool is not used a lot this can be done every 2 weeks. However, if the weather is warm and the pool is used a lot, adding a dose of chlorine granules or a chlorine tablet every week is fine.
pH and chlorine testers
How much chlorine should I add?
This depends on the status of your pool. As told above, is it just coming out of winter or have you just filled it? Then it's best to do a chlorine shock. For a chlorine shock, it is best to add 120 grams of granules per 10 m3.
If you want to give the pool a regular maintenance dose, you should add 40 grams of granules per 10m3. Of course, you can also work with chlorine tablets, which is more convenient for slightly larger pools. With chlorine tablets, you can count on 1 tablet (200g) per 30m3.
|
Type of treatment |
Type of chlorine |
10m3 |
20m3 |
30 m3 |
40 m3 |
50 m3 |
60 m3 |
|
Chlorine shock |
Chlorine granulate |
120 g |
240 g |
360 g |
480 g |
600 g |
720 g |
|
Normal maintenance |
Chlorine granulate |
40 g |
80 g |
120 g |
160 g |
200 g |
240 g |
|
|
Chlorine tablet (200g) |
|
1 |
|
|
2 |
Which chlorine is best for my pool?
There are 3 different types of chlorine. Chlorine granules, chlorine tablets and liquid chlorine. Liquid chlorine is not suitable for most pools, this is especially for public pools with an automatic dosing system.
The other 2 types of chlorine are chlorine granules and chlorine tablets. Chlorine granules are the most accessible as they can be used for chlorine shock and normal maintenance and the amount can be adjusted to the size of the pool.
Chlorine tablets, in turn, are more convenient, you can just put them in the skimmer and they do their job. They come in 200g tablets, making them optimal for pools from 30 m3.
