If it s organic stain from algae it can be removed somewhat but but might not be perfect.
Algae stains in vinyl pool.
Chemical pool stains or uv stains are more tricky to treat and are most likely un treatable.
These substances need to be removed as part of the treatment.
In most cases this is all that is needed with vinyl pool liners.
If the stain is old or excessive then the pool may have to be shocked to remove the stain.
Scrub the algae with a soft nylon brush.
As the pool drains hose and brush off the steps and walls if there are any dirt or stains but do not use a pressure washer.
For many vinyl liner stains the prescription from dr.
Basically this is because green algae is one of the fastest growing algae types and will often turn your pool green or cloudy overnight.
For metal stains either stain solution 1 the iron cobalt spot etching stuff or 2 the copper scale stuff may be indicated depending on the metals discovered.
They can occur do to bleaching of the vinyl liner or incorrect ph or chlorine levels.
You may want to do this on a test area first as it might bleach out the liner somewhat.
These stains normally occur after a long winter or thunderstorm.
Doheny s also carries a spray on vinyl cleaner that can be used if your pool is drained.
Mineral pool stains are treated with acidic stain removers.
Or in the case with plaster pools a chlorine or acid wash might be needed.
Also green algae most commonly starts in corners or areas where automatic pool cleaners are unable to access.
Organic pool stains are not usually hard to remove but with time your pool will start to have a dull light brown color that you won t be able to remove.
Most of the time organic stains are removed during the shocking process.
Organic pool stains are treated by shocking the pool with a chlorine shock treatment.
How to kill green algae safely in a vinyl liner pools vinyl specific treatment to protect your vinyl pool liner while attacking algae hard.
Green algae is the most common cause of algae stains in swimming pools.
When adding alum as a stain treatment only use products labeled for pool use make certain your water chemistry values are in balance and that you on.
Typically greenish brown colored stains are related to something organic like algae or leaves that were left on the pool floor.
If that doesn t work try a stain remover.