How to Prevent Swimming Pool Stains and Discolouration

A sparkling, crystal-clear swimming pool is the pride of any homeowner. However, unsightly stains and discolouration can quickly turn your backyard oasis into an eyesore.

At Algaefree Australia, we understand the frustration that comes with pool staining issues.

With our expertise in water treatment solutions, we've put together this comprehensive guide to help you prevent stains before they become a problem.

The Causes of Pool Stains

Before diving into prevention strategies, it's important to understand what causes pool stains.

And identifying the type of stain affecting your pool is critical for effective prevention and treatment. Most swimming pool stains fall into two categories:

Organic Stains

Caused by leaves, berries, algae, and other plant matter that decompose in the pool.

Metallic Stains

Results from dissolved metals like iron, copper, and manganese in your pool water

Water Balance: Your First Line of Defence

Maintaining proper water chemistry is essential for preventing pool stains. Unbalanced water can cause metals to oxidise and create stains on your pool surfaces.

Keep these parameters in check:

• pH levels between 7.2 and 7.6

• Total alkalinity between 80-120 ppm

• Calcium hardness between 200-400 ppm

• Chlorine levels between 1 and 3 ppm

Test your water weekly during swimming season and adjust as needed. Properly balanced water not only prevents stains but also protects your pool equipment and ensures swimmer comfort.

Regular Cleaning Routine

A consistent cleaning schedule prevents debris from settling and causing stains:

1. Skim the surface daily to remove floating debris

2. Brush walls and floor weekly to prevent biofilm buildup

3. Vacuum the pool at least once a week

4. Clean the waterline regularly to prevent scum buildup

For spot cleaning of waterline scum and small stains, our SPOTBLOC™ stain eraser is highly effective and can be used above or below water without requiring pH adjustments.

SPOTBLOC Pool Stain Eraser

Metal Management

Metals in your pool water are a primary cause of discolouration. These can come from various sources, including fill water (especially well water), corroding equipment, metal-based algaecides, and runoff from nearby landscaping.

To prevent metal-related stains:

• Use a hose filter when filling your pool

• Regularly check metal equipment for signs of corrosion

• Avoid using copper-based algaecides if possible

• Consider using SeriouStain™ Inhibitor as a preventative measure

SeriouStain Inhibitor

Preventative Treatments

Prevention is always easier than a cure. We recommend using SeriouStain™ Inhibitor regularly to prevent mineral deposits from forming and replacing approximately one-third of your pool water annually to reduce mineral concentration.

Then, consider adding a sequestering agent to your regular maintenance routine.

Quick Response to New Stains

If you notice a stain beginning to form, act quickly!

For small, localised stains, use SPOTBLOC™ stain eraser immediately.

For larger areas showing discolouration, consider a preventative dose of SeriouStain™ Remover. Remember to adjust water chemistry to optimal levels.

Seasonal Considerations

Western Australian pool owners should be particularly vigilant during certain seasons:

Summer

High temperatures can accelerate chemical reactions that lead to staining.

Autumn

Falling leaves and plant debris increase organic stain risk.

Winter

Reduced maintenance may allow stains to develop unnoticed.

Spring

Pollen and increased rainfall can introduce new contaminants.

If you're struggling with persistent staining issues or want personalised advice on preventing discolouration in your pool, our team at Algaefree Australia is here to help. Explore our complete range of pool stain prevention and removal products online, or contact our technical team for expert guidance on keeping your pool pristine all year round.