Brown stains in salt water pool are quite obvious. Many pool owners find it hard to remove stains from their swimming pools. Why is that? The reason is that they do not understand the type of stain they are dealing with and do not remove them accordingly. The removal process will vary depending on the type of stain. This article will go over the types of stains found in pools and how to remove them.

What Are the Stains?

Brown Stains in Salt Water Pool

Stains alter the appearance of your pool’s surface. A stain is also known as a scale by pool owners. The scale becomes colored while coming in contact with dirt and metals. A scale is not a stain in the true sense. It is instead, a deposit of calcium carbonate that affects the look of your pool water by making it look like milky.

What Causes a Stain in a Swimming Pool?

Your swimming pool gets stained due to many reasons, and metal is one of them. When the metal intrudes your pool water, it reacts with the chlorine. As the result, the water becomes a little darker. In addition to metal, the following are some other reasons why you might have stains in your pool.

  • When salt is added to your pool, it can cause stains easily. The iron will cause brown stains in the saltwater pool and manganese will cause dark brown or black stains.
  • Liquid chlorine will also cause brown stains after a period of time.
  • With bore water, you can also expect stains.
  • The metal fixtures in the ladder and walls can cause iron stains.
  • Algaecides containing metals will cause black stains.
  • Your pool can get organic yellow to green stains due to algae growth from leaves and dirt.
  • The garden dirt can also cause stains in your pool water.
  • Fiberglass pools can get black stains.
  • Scales can cause a milky appearance and sandpaper feel.
  • Water imbalance such as high pH, high alkalinity, high TDS, and high calcium level can also cause stains.

What Are the 

Categories of Stains?

There are four categories of stains: organic stains, metal stains, scale, and oxidation.  The organic stains appear in a green, brown, and yellow color. Metals cause brown stains and oxidation create black stains. Scale causes a milky appearance.

How to Remove Stains

You will have to do a stain test to know the type of stain before considering the removal process.  Removing the stains will offer only a temporary solution. Pool cleaning experts at Next Level Pool Services state that the stains can appear after a month or two.

Before removing the stain, make sure that the chlorine level is not more than 3.0PPM.  More chlorine will offer less effective results. During the middle of summer, you can turn off the salt chlorinator for two days to maximize the benefits. In winter, you can use 250 grams low chlorine remover to remove 5.0 PPM free chlorine in around 50,000 litres in 2 hours.

Next Steps

There are various types of stains that can appear in your swimming pool. The four categories of stains include: organic stains, metal stains, scale, and oxidation. So, are you wondering what the brown stains in salt water pool are? There’s a good chance that there’s one of these types of stains in your pool.

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