Brown Stains On Bottom Of Pool Liner

For stains on a horizontal surface you can test the surface for mineral staining by using a small amount of acid on the stain.

Brown stains on bottom of pool liner.

This will result in blue green teal black or dark purple stains. Too much copper usually results in blue green staining while iron results in brown red or yellow staining. If you see brown red yellow staining that could be do to too much iron. The metals that commonly cause pool stains are iron manganese copper.

These stains normally occur after a long winter or thunderstorm. One of the most common causes of stain is the salt. In this post we discuss identifying cleaning and preventing swimming pool stains from various sources. Organic pool stains come from dead algae small animals or organic debris.

If the stain lightens from a small application of acid to the stain then it is a mineral type of stain. Green or green brown pool stains organic usually caused by decomposed leaves twigs algae or other plant life. Iron pool staining can be brown red or a yellow orange color. Vinyl pool liner fading can also be an issue worth mentioning.

Even the manganese can also give a quite dark brown or even a blackish stain. Copper is from ionizers and corrosion of copper and brass pipes. Calcium or sodium salts can leave whitish deposits on your pool liner. Stains that appear reddish brown or very dark are typically related to metals in your pool water.

Adding salt to the salt water pool. Sometimes caused by decomposed bugs or critters. The chemicals that are introduced into the swimming pool s filtration system are there to get rid of algae and other bacterial growths. What are these brown stains in my pool.

The most common reason for algae to appear in a swimming pool is from improper ph and chlorine levels. The iron depending on the severity provides with a yellow to brown stain in the pool. Place a vitamin c tablet ascorbic acid on the stain for a short time period.