Tag Archives: ph

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What are the Best pH Levels for Your Pool?

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What are the Ideal pH Levels for Your Pool?

The pH is one of the most important measures and parameters to maintain the water quality of your pool. If you keep the pH at the right levels, in addition to enjoying healthy water you can keep the water in your pool clean and crystal clear.

The pH is the measure of the acidity or basicity of a solution, in this case, the water in our pool. The optimal values recommended by the experts range between 7.2 and 7.6, so we must pay attention and be alert if the average obtained falls outside the indicated range.

If the pH decreases below 7.2 we have acidic water. If this happens, it will cause irritation to the skin, eyes and mucous membranes, in addition to generating corrosion problems in the pool materials (metal ladders, pumps, valves, and filters).

Person Feet Dipping on Pool

If on the contrary, the pH value rises above 7.6, the water in our pool becomes basic or alkaline. As was the case with acidic water, alkaline water, in addition to previous symptoms such as skin and eye irritation, would also cause dryness in our skin. Due to the basicity of the water, traces of calcium compounds are generated on the surface of the pool, and consequently, the water is seen in a more turbid and less crystalline form, also reducing the desired sterilizing and disinfectant effect with the addition of chlorine, consequently generating algae problems.

Experts recommend that periodic checks be made to maintain good water quality, as well as to maintain pH levels at levels suitable for bathing. It is advisable to perform a pH measurement at least once a week, acting as explained below if the pH parameters are beyond the ranges indicated.

Importance of the pH of the Pool, Why Does it Rise and Fall?

The ideal pH range for our pool water to be healthy ranges from 7.2 to 7.6, but sometimes when we take the measurement with our pH meter we are surprised that this value has risen or fallen.

The reasons why the pool’s ph rises (or falls) are mixed and varied, but commonly  the pH of the pools usually gives high values, that is, basic ph’s:

  1. A determining factor has to do with the amount of water in the pool. Weather factors such as wind and sun make the water evaporate over time and therefore the pH increases as the amount of water decreases. On the other hand, ultraviolet radiation from the sun increases the dissolution rate of chlorine in water, generating a gradual increase in pH values.
  2. A second factor is the bathers themselves. The sunscreens, moisturizers, body lotions, hair cells, dead skin, and even electrolytes from sweat make both chlorine and water acidity to be modified. Generally, bathers also cause pH levels to rise.
  3. Finally, the way to add chlorine to the pool can also change the pH values. The chlorine added in liquid form is nothing more than sodium hypochlorite, that is, bleach. This salt in the form of a solution is a highly alkaline or basic substance and therefore its addition generates significant pH increases. Chlorine added in tablets, on the other hand, includes trichloroisocyanuric acid that acidifies the water, thus reducing the pH of the water. A third modality is a form of granulated chlorine, which is characterized by having a pH close to neutrality (6.7) and the pH levels will be close to 7 therefore.

If for some reason you add more chlorine than you should, you should know how to lower chlorine pool. For this, there are different techniques we will discuss later.

How to keep the pH at optimal values?

Maintaining the pH value at optimal values ​​is of the utmost importance. Failure to do so creates a danger to the health of the users of the pool. The recommended pH values ​​range between 7.2 and 7.6, so a periodic pH measurement is advisable. Broadly speaking, when the pH becomes acidic and falls below 7.2, acidic water can irritate the eyes and skin (it is important to know how to increase the pool). If the pH rises from 7.6 becoming the basic water, there is a loss of effectiveness of the dissolved chlorine and therefore a decrease of the disinfectant power that is pursued. 

The pH meter or pH meter is the scientific instrument specially designed for these tasks. In the market, we have different types of meters, such as digital, pocket, and even the test strips, which although they give us semiquantitative values, we must not neglect their effectiveness, simplicity, and ease of use.

Expert recommendations tell us that pH measurements must be made periodically or after special episodes, such as a storm. The rain and the pollution that drags in its precipitation tends to acidify the water and raise the pH. It is also advisable to measure it after the use of the pool by a large number of bathers since the use of lotions, sun creams, and the bathers’ own sweat can cause the pH to rise and become more basic.


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How to Avoid White/Limestone Deposit on Your Pool?

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What is White deposit?

The white deposit is a deposit of limestone that can agglomerate on the walls and the bottom of your pool. 

What is limestone?

It is the result of a combination of calcium carbonate and magnesium carbonate which consequently forms a high TH (hardness of water).

The hardness of the water depends on your geographical region. It is the result of minerals in the soil that are dissolved during the passage of water.

 

Ceramic tile with heavy build up

What problems are caused by limestone?

In addition to the aesthetics of your pool limestone can affect the filtration. The agglomeration of limestone promotes the encrustation of impurities and the development of algae. In addition, too much limestone can block the filtration system. 

How to measure TH?

The unit of measure of TH is the French degree (° F). It can also be measured in ppm.

1 ° F = 10 ppm = 1g / l

The ideal level of TH is between 100 and 250 ppm (10 – 25 ° F). Too low you risk making the water corrosive but a TH too high favors the production of white deposit.

It is very difficult to reduce the TH of the water. However, it is possible to increase it using calcium chloride. 

How to regulate the TH of your pool to avoid white deposit?

With hard water (above 250 ppm): Firstly, a high temperature of your water favors the formation of the deposit. Adjusting the temperature of your pool helps limit limescale deposits. Second, regulate the pH of your pool between 7.2 and 7.4. Finally, if you can, add a sequestering product to slow the limestone deposit.

With freshwater (less than 100 ppm): Use a product to increase the TH to 150 ppm and adjust the pH of your pool.

Learn more: 

Do not confuse pH and tH


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tH and pH of Your Pool: Know the Difference

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TH and pH are among the 3 factors that make up the balance of water with TAC. They allow you to keep clean and clear water all season. To enlighten you and help you to differentiate them, here are our explanations:

TH

The tH corresponds to the hardness of the water, which indicates its concentration in limestone. It is measured in French degree (° F) and is ideal between 10 and 20 ° F. Indeed, the higher the tH, the harder the water is, that is to say, it is limestone. On the other hand, the lower it is, the softer the water.

What are the consequences?

If the water is hard ( high tH ):

The limestone is deposited on the walls, it creates white/gray spots then it can scale your filtration. In addition, this gives swimmers a risk of irritation to the eyes or skin.

If the water is soft (low tH):

First of all, it’s not because they say it’s sweet, it does not do anything to your pool. Indeed, the water gnawing the metal parts of your pool (such as your ladder, lighting), it makes possible eye irritation.

Finally, it is possible that it generates corrosion of the walls in concrete pools.

How to regulate the tH of your pool?

With hard water (above 20 ° F): First, be sure to keep the temperature of your pool water that will help scale if it is high. Second, regulate the pH of your pool between 7.2 and 7.4. Finally, add if you can a sequestering product to slow down the arrival of limestone.

With freshwater (less than 10 ° F): Use a product to increase the tH to 15 ° F and then adjust the pH of your pool.

PH

The pH corresponds to the acidity of the water and is measured on a scale of 0 to 14. The pH of drinking water is usually between 6.5 and 8.5. However, for your pool water, it is ideal between 7.2 and 7.4. The pH is evaluated on 3 levels:

  1. A pH below 6.5 means that your water is acidic
  2. A pH of 7 means that the water is neutral
  3. PH above 7.6 means your water is basic

What are the Consequences?

Low pH: your bathing water can become aggressive on the skin, eyes and various equipment of your pool.

Neutral pH: All is well.

High pH: Water can become cloudy due to limescale settling in the pond. Thus, there will be an inefficiency of the actions of the products of treatments.

How to regulate the pH of your pool?

If it is too high (8 and 14): Use a less pH product respecting the doses provided by it. After pouring it into the water, wait a few hours (minimum 6 hours) before testing the pH of your water.

If it is too low (between 0 and 6): An acidic water makes your bathing uncomfortable. Unlike the instructions above, use a pH plus product. During this operation, be sure to leave your filtration running and wait at least 6 hours before testing your water again.

To conclude, regulate your pool water regularly so you can act on time to enjoy your bathing moments.


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