Ascorbic Acid for Pools: What You Need to Know

Ascorbic acid is a type of vitamin C that is commonly used for its antioxidant properties. However, it can also be used for a variety of other purposes, including in swimming pools. In this blog post, we will explore what you need to know about using ascorbic acid for pools.

What is Ascorbic Acid?

Ascorbic acid, also known as vitamin C, is a water-soluble vitamin that is found in many fruits and vegetables. It is commonly used as a dietary supplement to boost the immune system and prevent scurvy, a disease caused by vitamin C deficiency. Ascorbic acid is also used in the food and cosmetic industries as a preservative and antioxidant. Brova Ingredient Suppliers will provide ascorbic acid for pools, and his suppliers will reach you easily.

Why Use Ascorbic Acid in Pools?

Ascorbic acid is commonly used in pools to treat stains caused by metal buildup. Metals such as iron, copper, and manganese can enter a pool through various sources such as fill water, algaecides, and metal-based pool equipment. When these metals accumulate in a pool, they can cause unsightly stains on the pool surfaces and equipment.

How Does Ascorbic Acid Work in Pools?

Ascorbic acid works by reducing metal ions to their soluble form, allowing them to be filtered out of the water. When ascorbic acid is added to a pool, it reacts with the metal ions and converts them into a soluble form that can be easily filtered out. Ascorbic acid does not remove the metals from the water, but rather converts them into a form that is less likely to cause staining.

When to Use Ascorbic Acid in Pools?

Ascorbic acid is typically used in pools when metal stains are present. These stains can appear as brown, blue, or green discolorations on the pool surfaces or equipment. If you suspect that your pool has metal stains, it is recommended to perform a metal test to confirm the presence of metals.

How to Use Ascorbic Acid in Pools?

To use ascorbic acid in pools, first, determine the amount of ascorbic acid needed based on the size of the pool and the severity of the stains. Ascorbic acid is typically added directly to the pool water and allowed to circulate for a period of time. After the recommended time has elapsed, the pool should be thoroughly vacuumed and the filter cleaned to remove the dissolved metals.

Precautions When Using Ascorbic Acid in Pools

When using ascorbic acid in pools, it is important to take precautions to ensure the safety of swimmers and the pool equipment. Ascorbic acid can lower the pH of the water, so it is important to monitor the pH levels regularly and adjust as needed. It is also important to avoid adding too much ascorbic acid, as this can cause the water to become acidic and damage the pool surfaces and equipment.

Alternative Stain Treatment Options

While ascorbic acid is an effective treatment for metal stains in pools, alternative options are available. One option is to use a sequestering agent, which binds to the metal ions and prevents them from reacting with other chemicals in the water. Another option is to use a stain remover specifically designed Ascorbic Acid for Pools stains.


In conclusion, ascorbic acid is useful for treating metal stains in pools. It converts the metal ions into a soluble form that can be filtered out of the water. However, taking precautions when using ascorbic acid is important to ensure the safety of swimmers and the pool equipment. If you are unsure how to use ascorbic acid in your pool, consult a professional pool service provider.

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