The brown stain might be caused by the ioniser that deposits iron metal in your pool you need to clear the stains using ascorbic acid then consider reducing iron metal levels in your pool by draining and refilling a portion of your pool water or use a metal remover such as proteam metal magic to remove metals through the filter and avoid brown stains when you shock your pool or when ph is low.
Brown stains swimming pool liner.
The most common pool stains are blue green and are usually due to too much copper in the water.
Copper is from ionizers and corrosion of copper and brass pipes.
Organic pool stains come from dead algae small animals or organic debris.
Identifying that yellow brown stain on your swimming pool s walls.
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Pool balancers can sometimes lighten pool stains to the point that you can forego additional treatment.
If you see brown red yellow staining that could be do to too much iron.
Stains that appear reddish brown or very dark are typically related to metals in your pool water.
The metals that commonly cause pool stains are iron manganese copper.
Improper ph levels alkalinity and calcium can cause staining.
The first step in getting rid of pool stains from your vinyl pool liner is to test the balance of your pool chemicals.
It can cause rust marks in the bathtub or toilet and it can stain your pool.
The iron depending on the severity provides with a yellow to brown stain in the pool.
In this post we discuss identifying cleaning and preventing swimming pool stains from various sources.
Many municipal and even some well water sources have iron as a contaminant.
Calcium or sodium salts typically leave a white deposits.
How to identify vinyl stains.
Blue green stains are usually from too much copper in the water.
Calcium or sodium salts can leave whitish deposits on your pool liner.
Iron pool staining can be brown red or a yellow orange color.
For stains on a horizontal surface you can test the surface for mineral staining by using a small amount of acid on the stain.
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One of the most common causes of stain is the salt.
This will result in blue green teal black or dark purple stains.