Vitamin C for the Pool: disadvantages of using citric acid and ascorbic acid

Vitamin C for the pool - why we advise against Ascorbic Acid?

Vitamin C, also known as ascorbic acid, is often promoted as a natural alternative to pool chemicals. However, is it really an effective and safe way to maintain pool water cleanliness? In this article, we will take a closer look at this issue and explain why traditional pool chemicals are a better choice. Understanding the properties of vitamin C and its impact on pool water quality is crucial for every pool owner.

Last updated: August 26, 2025

Why is it worth considering water treatment with vitamin C for the pool?

A garden pool is a luxury that requires proper care and attention to water cleanliness. Pool owners often look foralternative methods of water treatment in garden pools that could replace traditional chemical agents. Unfortunately, many people add vitamin C to the pool, but its use is one of the popular yet controversial solutions. It is worth noting that not every alternative is equally effective, and vitamin C, although natural, may not meet expectations regarding water quality.

What is vitamin C and how does it work in the pool?

Vitamin C, also known as ascorbic acid, is renowned for its incredible healing properties and exhibits strong antioxidant effects. In the context of pools, vitamin C has the ability to neutralize chlorine and remove iron stains and other metals from the water.

In theory, vitamin C can convert iron hydroxides into more soluble forms.forms that are then removed by filtration. However, in practice, vitamin C acts as a strong antioxidant on the iron present in water, changing its valence and affecting the pH level of the water. It is also worth noting that vitamin C is not a substance that can replace traditional purification methods, as its action is limited and short-lived.

The action of vitamin C in the pool:

  • Chlor neutralization: Vitamin C is capable of neutralizing chlorine in pool water, which may be beneficial for individuals allergic to chlorine or those preferring less chemical methods of disinfection.
  • Iron stain removal: Vitamin C can effectively remove brown water forms and iron in yellow water. The use of vitamin C in such cases can temporarily improve water clarity,changing its color from green or brown to transparent or white, however, it does not permanently improve water quality and may negatively affect water balance and alkalinity.

Problems related to the use of vitamin C in pools

Although vitamin C may have some benefits, its use for cleaning pools is associated with many problems that may outweigh the advantages. Here are a fewkey issues:

1. Vitamin C for pools significantly lowers pH

Ascorbic acid is an organic acid that strongly lowers the pH of pool water. Maintaining the proper pH is crucial for the health of pool water and the comfort of swimmers. Check the water pH regularly tokeep them in the range of 7.2-7.6. After adding vitamin C, it may turn out that the pH of the water becomes too low, which requires additional corrective actions.

It's worth remembering: Alternative water treatment methods, such as vitamin C, may seem tempting, but their effectiveness in the long term may be questionable.

2.Ascorbic acid for pools does not provide lasting water disinfection

Although vitamin C may temporarily improve the appearance of water, it does not provide long-term disinfection. Traditional pool chemicals, such as chlorine or active oxygen, are essential for keeping the water free from bacteria and algae. Vitamin C does nothas disinfecting properties, which can lead to rapid water contamination.

3. Citric acid affects the increased risk of algae growth

Vitamin C can influence water balance, creating an environment conducive to algae development and leading to the appearance of green water. Green water ina pool is not only unsightly but also dangerous to the health of users. Maintaining constant cleanliness and removing algae requires regular use of pool chemicals.

Alternatives to cleaning the pool with vitamin C: Professional pool chemicals

Vitamin C for the pool can therefore be considered more of a one-time experiment. We recommend using proven,professional products for pool water treatment. Traditional pool chemicals are specially formulated to ensure effective and safe purification of pool water.

Benefits of using traditional pool chemicals:

  • Effective disinfection: Chlor and active oxygen effectively disinfect the waterpool, eliminating bacteria, viruses, and algae.
  • Stable pH: Pool chemicals allow for easy maintenance of the appropriate water pH, which is crucial for the comfort and safety of pool users.
  • Long-lasting effects: Professional products ensure long-lasting effects, keeping the watercrystal clear and completely transparent.

Practical tips for maintaining pool water clarity

1. Regularly check the water's pH

To maintain water balance in the pool, it is necessary to regularly check the water's pH.The ideal pH of the water in the pool should be between 7.2 and 7.6. Check the water pH at least once a week - this will allow for quick detection and correction of any deviations.

2. Using appropriate chemical agents

For disinfecting pool water, it is recommended to usechlorine, active oxygen or multifunctional tablets. These agents are effective in eliminating bacteria and algae, ensuring that your pool will have clean water.

3. Pool water filtration

Regularly turning on the pool filter is crucial for removing impurities from the water. The activated pool filter should operatedaily for at least 8-12 hours, depending on the size of the pool and the intensity of use.

It is worth remembering: Vitamin C can only temporarily improve the appearance of the water, but it is not a long-term solution.

4. Preventing and removing stains

If there are pool water stainsbrown stains or yellow water - this means it is iron contained in the water. Using professional iron removal products will help keep the water in excellent condition.

Why should you avoid vitamin C in the pool?

Although vitamin C may seem like an attractive solution for cleaning pool water, its useis associated with many problems that can negatively affect the quality and safety of water. Vitamin C does not replace pool chemicals and does not provide long-lasting disinfection, which can lead to serious health issues. Instead of experimenting with Vitamin C, we recommend using proven, professional pool water treatment products thatwill ensure clean water and a safe and pleasant bathing experience throughout the season!

Summary

Vitamin C for pools, while popular in some circles, is not the best solution for maintaining water cleanliness and safety. Traditional pool chemicals, although they may seem less "natural," are essential for ensuring effectivedisinfection and long-lasting effects. Remember to use appropriate chemicals and take care of filtration to enjoy crystal clear water in your garden pool.


Frequently Asked Questions (FAQ)

How much vitamin C for the pool?

Typically, about 1-2 grams of vitamin C is used for every1000 liters of water to remove iron and other impurities. However, the best solution is not to add vitamin C to the pool at all. Traditional pool chemicals are more effective and safer.

What are the opinions on vitamin C in the pool?

Opinions on vitamin C in the pool are mixed. While some claim it has a positive effect on water clarity, most experts recommend using proven methods.chemicals.

Does the use of ascorbic acid remove green water?

The use of ascorbic acid may temporarily improve the appearance of the water, but it does not provide a long-term solution for removing green water. It is recommended to use professional water treatment products.

Will the use of citric acid get rid of iron-stained water?

No, the use of citric acid will not remove iron.from water in a permanent way. For this purpose, it is best to use specialized preparations.

What are the other methods of pool water treatment?

Other methods of pool water treatment include the use of chlorine, active oxygen, and filtration systems that help maintain water cleanliness.

Can vitamin C be used in conjunction with other chemical agents?

The use of vitamin C in combination with other chemicals is not recommended, as it may lead to unpredictable chemical reactions.

Author: Maciej Waliduda — a specialist at MojaWoda.com, with many years of experience in water treatment and pool chemistry.

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