Green algae is one of the most common and frustrating problems pool owners face. One day your water looks crystal clear, and the next it turns cloudy green and slippery. The good news is that you can fix it yourself with the right steps and consistency. The better news is that with proper care or help from a trusted pool services company, you can prevent it from coming back.

At Hill Country Pools, we’ve been helping pool owners since 1972. In this guide, we’ll walk you through exactly how to get rid of algae in your pool, including fast DIY solutions and when it’s best to call in our team.

 

What Does Green Algae Look Like?

 

Green algae typically turns your pool water cloudy or deep green. You may also notice:

• Slimy walls and steps
• Poor visibility in the water
• A musty or unpleasant smell
• Fast spreading discoloration

Unlike black algae, which roots into surfaces, green algae floats freely. That makes it easier to remove but also easier to spread quickly if untreated.

 

What Causes Green Algae in Pools?

Understanding the cause helps you prevent future outbreaks. Green algae thrives when your pool chemistry and circulation are off balance.

Common causes include:

• Low chlorine levels
• Poor filtration or circulation
• Dirty filters or clogged systems
• Hot weather and sunlight
• Debris like leaves and dirt

If your system is not running properly, it may be time to consider pool equipment repair to restore proper water flow and filtration.

 

How to Get Rid of Algae in Pool Quickly

 

If you want fast results, follow this proven step-by-step process.

 

Step 1: Brush the Entire Pool

Start by brushing all surfaces including walls, steps, ladders, and corners. This loosens algae and exposes it to chlorine.

Focus on:

• Corners and crevices
• Pool floor
• Behind ladders and lights

Step 2: Test and Balance the Water

Use a pool test kit to check:

• pH levels
• Chlorine levels
• Alkalinity

 

Ideal ranges:

• pH: 7.2 to 7.6
• Chlorine: 1 to 3 ppm

Balancing ensures your shock treatment will work effectively.

Step 3: Shock the Pool

Shock treatment is the most important step when learning how to get rid of algae in pool water.

Use a high-dose chlorine shock and apply it in the evening to avoid sunlight breaking it down.

For severe algae:

• Use 2 to 3 times the normal shock dose
• Run your pump continuously

Step 4: Run the Filter Nonstop

Keep your pump and filter running for at least 24 to 48 hours. This helps remove dead algae particles from the water.

If your system is struggling, professional pool services can ensure everything is working efficiently.

Step 5: Vacuum the Pool

Once the algae dies, it settles at the bottom. Vacuum it out carefully.

• Use manual vacuuming for best results
• Avoid stirring up settled debris

Step 6: Clean or Backwash the Filter

Your filter will be full of algae residue.

• Backwash sand or DE filters
• Clean cartridge filters thoroughly

 

This step is crucial to prevent algae from returning.

 

How to Get Rid of Black Algae in Pool

 

Black algae is more stubborn than green algae. If you are searching for how to get rid of black algae in pool surfaces, you need a more aggressive approach.

Steps include:

• Use a stiff brush to break the protective layer
• Apply chlorine tablets directly to affected spots
• Maintain high chlorine levels for several days
• Repeat brushing daily

 

Black algae roots deeply into plaster and concrete, so persistence is key. In severe cases, a pool cleaning professional may be needed to fully eliminate it.

 

DIY vs Professional Pool Cleaning

While DIY methods work, maintaining a consistently clean pool takes time, effort, and expertise.

DIY Pros

• Lower upfront cost
• Immediate action
• Full control over process

DIY Cons

• Time-consuming
• Easy to miss hidden issues
• Requires chemical knowledge

 

This is where working with us, an experienced pool services company, really makes a difference.

 

Why Choose Professional Help

If algae keeps coming back, the issue is often deeper than just chlorine levels.

Professional pool services can:

• Diagnose underlying problems
• Ensure proper water chemistry
• Repair or optimize equipment
• Provide regular maintenance

Hill Country Pools has been helping homeowners since 1972. As a family-owned business, we focus on honest service, fair pricing, and long-term relationships.

What sets us apart:

• No contract services
• Flexible hourly rates
• Decades of hands-on experience

This means you get help when you need it without being locked into long-term commitments.

 

Preventing Green Algae From Coming Back

Once your pool is clean, prevention becomes your top priority.

Maintain Proper Chlorine Levels

Always keep chlorine within the recommended range. Low chlorine is the main cause of algae growth.

Run Your Pump Daily

Circulation prevents stagnant water where algae can thrive.

• Run pump 8 to 12 hours daily
• Increase runtime during hot weather

Clean Your Pool Regularly

Routine pool cleaning removes debris that feeds algae.

• Skim leaves daily
• Brush weekly
• Vacuum as needed

Monitor Water Chemistry

Test your water at least once a week. Balanced water keeps algae from forming.

Keep Your Filter Clean

A dirty filter reduces efficiency and allows algae to grow.

 

Signs You Need Expert Help

Sometimes algae problems go beyond basic cleaning. You should consider professional help if:

• Algae returns quickly after treatment
• Water stays cloudy despite shocking
• Equipment is not functioning properly
• You do not have time for regular maintenance

A reliable pool services company can save you time, money, and frustration in the long run.

 

Hill Country Pools: A Trusted Partner Since 1972

 

For over five decades, Hill Country Pools has built a reputation based on trust, quality, and customer-first service.

As a family business, we understand that your pool is part of your home and lifestyle. Our approach is simple:

• Provide dependable pool services
• Offer transparent pricing with hourly rates
• Deliver expert care without requiring contracts

Whether you need routine pool cleaning, help with stubborn algae, or full pool equipment repair, our team brings experience and reliability to every job.

 

Get Rid of Algae in Your Pool with Hill Country Pools

Learning how to get rid of algae in your pool is something every pool owner should know. Green algae may be common, but it doesn’t have to take over your water.

By following the right steps, you can restore your pool quickly:

• Brush thoroughly
• Balance your water
• Shock aggressively
• Run your filter continuously
• Clean and maintain regularly

For tougher problems like black algae or recurring issues, calling in professional help is often the smartest choice.

As a leading pool services company, we at Hill Country Pools are here to help you keep your pool clean, safe, and ready to enjoy all year round. That’s where we make the difference.