How To Remove Algae Stains From Concrete Pool

If you have an outdoor pool, you may well encounter algae stains. This can be a real problem that affects your enjoyment of your pool. Adding extra chlorine won’t necessarily clear up these stains, so it’s important to understand how to remove algae stains from your pool effectively. You can remove stains whenever you drain your pool, and it’s wise to make this a standard part of your swimming pool maintenance. In this blog, we look at how to remove algae stains from a concrete pool.

What causes algae stains?

Certain weather conditions can be a factor in the development of algae stains. For example, winds can cause plant spores to fall into your pool. The combination of sunlight and the pool temperature creates the ideal environment for algae to grow, leaving unpleasant stains. It thrives in cool and moist areas.

Why is algae a problem?

As well as looking unsightly, algae and algae stains are a concern in swimming pools because they pose a health hazard. Rashes and skin infections are the most common hazard associated with algae and algae stains. You can also pick up other infections and symptoms, including eye infections, fever, and diarrhea. Algae can be slippery too, putting you at greater risk of bruises or broken bones.

How to remove algae stains from a concrete pool

Using a specialist algae stain remover is the preferable option for removing algae stains. Not only do these formulas remove stains but some help to prevent the problem from re-occurring in the future. Once you have an appropriate product, follow these steps to remove algae stains.

After removing algae from your pool, make sure you read our tips on how to maintain your pool to give it the longest possible lifespan. A concrete pool’s lifespan is around 50 years (or more)but it needs to be properly maintained.

1. Fill a spray bottle

If your stain remover isn’t already supplied in a spray bottle, transfer some of the product into a clean spray bottle. Make sure no other cleaners are present in the bottle and label the bottle to avoid confusion. Each time you use the cleaner you should fill the bottle up about halfway. You can always refill if necessary.

2. Soak the stain

Spray the stain remover onto a small area. If you have extensive staining you’ll need to work on one section at a time. Soak the area so that the whole stain is covered with the cleaner and leave it to work for around five minutes, or according to the manufacturer’s instructions.

3. Scrub the stain

Scrub the area with a strong scrubbing brush. Use a circular motion and carefully work your way across the entire stain.

4. Rinse with a hose

Rinse the pool off thoroughly with a hose. Do this carefully to remove all of the stain and the cleaner. For stubborn stains, repeat the process until they are removed.

Alternative solutions

Algae stain removers can sometimes be hazardous to nearby plants. If there are plants close to the stains you might prefer to use an oxygen bleach solution instead. If you decide to do this it’s important to use protective eyewear. Mix five parts warm water with one part oxygen bleach and then follow the cleaning steps. After hosing down the area, brush away the excess liquid with a broom so that it dries more quickly. Vigorously brushing the concrete with a broom each week can help to prevent future stains from occurring.

Get in touch

At Ideal Pools, we’re the Gold Coast’s local swimming pool specialists. We’ve installed thousands of pools throughout the region and have exceptional knowledge of designing, installing, and maintaining pools.

Find out what our top concrete pool designs are on the Gold Coast and what you need to consider when designing your new pool.

If you’re looking for your dream pool or you need some advice on how to look after your swimming pool effectively, get in touch. Our team are always happy to help.

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