Using a trichlor tablet hold it on the stain for about 3 5 minutes.
Brown spots on pool liner.
Go to this page to see how to treat your pool for brown algae.
Iron pool staining can be brown red or a yellow orange color.
If the stain lightens up or disappears it s organic.
Stains that appear reddish brown or very dark are typically related to metals in your pool water.
Calcium or sodium salts can leave whitish deposits on your pool liner.
Once the algae has appeared onto a vinyl pool liner it is not hard to get rid of but it is a good indication it is time to check the pool s chemical levels.
For stains on a horizontal surface you can test the surface for mineral staining by using a small amount of acid on the stain.
This will result in blue green teal black or dark purple stains.
Even the manganese can also give a quite dark brown or even a blackish stain.
If it s closer to a brown black and is found on the sides of the pool as well then you might be looking at metal.
Place a vitamin c tablet ascorbic acid on the stain for a short time period.
You need to determine if the stain is organic or a metal stain.
On the other hand it promises to be more delicate if it is a question of micro mushrooms which in reality have developed behind the liner on the concrete.
And brown stains concentrated on the bottom can likely be attributed to dirt stains typically enhanced by calcium buildup.
The metals that commonly cause pool stains are iron manganese copper.
Step 1 scrub the algae with a soft nylon brush.
One of the most common causes of stain is the salt.
The first step to deal with organic materials is to shock your pool and scrub it.
The iron depending on the severity provides with a yellow to brown stain in the pool.
Removing brown spots on the liner of your pool can be a relatively easy operation if they result from the presence of organic waste or are a sign of deposits of dead algae.
Once you have the algae removed be sure to maintain the pool at its proper ph and chlorine levels to prevent the algae from coming back.
Copper is from ionizers and corrosion of copper and brass pipes.