No one can deny the fact that maintaining a pool involves a lot of maintenance work and monitoring of the water chemistry. Those who have just bought or constructed a pool are not yet aware of the tasks and duties that come with owning one.
In addition to cleaning the pool, you have to regularly test the pool water and constantly adjust the level of chemicals in the water.
When examining the water, you have to pay particular attention to the chlorine concentration and the pH value.
Hence, you have to know what pH means, how to test the pH, how to raise the pH in your pool, and how to lower it as required. In this article, we’ll walk you through the process of adjusting pH in the pool.
What Causes Low pH in Pool?
It’s extremely rare finding an extremely low pH level in the pool. However, some of the main causes are:
This often comes as a result of having too much rainwater and other foreign particles in the facility.
Rainwater usually has an average value of 5.6 to 5.8 and is therefore in the acidic range.
The rainwater ends up in any pool that is not covered with a tarpaulin. The effect of rainwater on pool water can vary widely.
How acidic the rain depends on how much acids are washed out of the air. The simple but best protection against acidic rainwater is to cover the facility before every downpour.
Various foreign particles in the water can be the cause of a low pH value. Foreign particles can get into the water through people, animals, or other external influences.
How to Bring pH Up in Pool
Anyone who observes the possible effects of a low pH level in the water should refrain from drawing premature conclusions. The problem isn’t usually that the pH is too low.
Indeed, the effects of too low pH partially overlap with those of too high pool pH. This is why you always have to begin by testing the water for the chemical levels.
In the following instructions, you will learn how to proceed step by step.
Step 1: Determine the pH
A simple method to determine the chemical values in the pool is to use test strips. The method isn’t the most accurate, but the test strips are inexpensive and easy to use.
Basically, you proceed as follows.
- Hold the test strip in the water for about 10 seconds.
- Then take it out. (Without shaking off the test strip.)
- Compare the resulting color with the table on the container.
- Read the pH where the colors match.
Step 2: Determine the Capacity of the Pool
If you don’t know the capacity of the pool, you’ll need to do some math. But don’t worry – it’s very easy.
Depending on the shape of the facility, different formulas are used to calculate the volume.
- To calculate a rectangular pool, multiply the length with width and the average depth
- For a round pool, multiply the diameter by the average depth and 0.78
- To calculate an oval swimming facility, multiply the length by width, the average depth and 0.89
- For an eight-shaped facility, multiply the length by width, by the average depth, and 0.85
Note: The (estimated) average depth is the average of the deepest and shallowest points in the pool. Just measure the depth at the deepest and the shallowest point, add the two numbers, and divide by 2.
If your pool has a different shape, you can divide the pool into sections. Then calculate the volume of the individual areas and then add all the volumes together.
The conversion from cubic meters to liters is very easy: just multiply the m³ by 1000.
Here is a small sample calculation to illustrate:
- For a rectangular pool with the dimensions of 6 m x 4 m x 2 m (length x width x depth), this results in a volume of 6m × 4m × 2m = 48m³.
- The resulting number of liters is 48m³ × 1000, equaling 48000 liters.
Step 3: How Much pH Plus Granules Do I Need?
The amount of required pH Plus granulate can then be calculated.
Here, too, a little formula is used:
- To increase the pH by 0.2, you need to add 4.5 g of pH Plus granules per 1000 liters.
With a water volume of 48,000 liters, the 216g pH Plus granules would be:
- 48000 liters / (1000 liters / 4.5 grams) = 48 x 4.5 grams = 216 grams of pH Plus granules
Now you have to compare the result with your measured value. If you measured a value of 6.8, you would have to use twice the amount of the granules to get into the optimal range of 7.0 – 7.4.
If you want to increase the value from 6.8 to 7.2, you need twice the amount of pH Plus granules.
Step 4: Add the pH Plus Granules to the Water
For the best possible effect, you should ensure that there is circulation in the pool. Therefore switch on the pool filter.
It is best to dissolve the granules in a bucket beforehand. To do this, fill a large bucket with at least 4 liters of water, add the granules and stir the mixture a little.
Do not pour all the liquid in the same place, but distribute the dissolved granules in the water by walking around the pool as it is poured.
Maintaining a pool involves a lot of work. In particular, pool owners must always keep an eye on the chemical values and adjust it if necessary. This can be a bit of a challenge at first. However, if you have mastered the basics first, you will have no problems with this part of pool maintenance in the future.
In this article, you learned not only the cause of a low chemical value but also how to raise the pH level.
We hope that we were able to help you and wish you a clean pool with a great pH value in the future!