Megan's Pool Guide

Best Pool Algaecides For A Sparkling Clean Swimming Pool!

By Megan Cox | Updated : 09/04/2024

Maintaining a pristine swimming pool often requires more than just regular cleaning and balanced chemicals. One common issue pool owners face is algae growth, which can turn a sparkling pool into a green or cloudy mess. Fortunately, pool algaecides are specially formulated to prevent and combat algae problems effectively. In this detailed guide, we’ll explore the best pool algaecides available, including their types, benefits, and specific products that stand out in the market. If your pool is prone to algae, you should consider using a preventative algaecide weekly.

Pool Algaecides

PoolRx Pool 6 Month Algaecide Treats 7.5k-20k Gallons, Single Unit Part Number 101001
Our 1 Pick Pool Algaecides

  • Pros & Cons
  • Effective Up To 6 Months
  • Eliminates All Types Of Algae
  • Treats 7.5k-20k Gallons Of Water

Price Value Ratio :Our Results

  • Why We Picked It

This awesome pool algaecide improves water quality and simplifies overall pool care. It can treat up to 20k gallons of water and last up to 6 months. We like this pool algaecide because it eliminates all types of algae and reduces overall chemical demand. This pool algaecide is also ideal for saltwater pools! PoolRx pool algaecide is great for year-round pool use! This is a great choice for your pool!

Kem-Tek Pool And Spa 60-Percent Concentrated Algaecide, 1 Quart KTK-50-0006
Our 2 Pick Pool Algaecides

  • Pros & Cons
  • Helps Clarify Pool Water
  • Safe With All Pool And Filter Types
  • Long-Lasting Non-Foaming Algaecide

Price Value Ratio :Our Results

  • Why We Picked It

This long-lasting pool algaecide helps clarify pool water and is safe with all pool and filter types. Kem-Tek 311-6 algaecide 60% concentrate is part of the chem lab easy 5 step DIY pool maintenance program. We really like this pool algaecide because it helps clarify your pool water and is safe for all pool and filter types. You will love this long-lasting pool algaecide! Works great for algae prevention!

Pool Essentials Fast-Dissolving Shock Treatment Value 6 Pack (13.4 oz Bags)
Our 3 Pick Pool Algaecides

  • Pros & Cons
  • Controls Bacteria
  • Clears Cloudy Water
  • Fast-Dissolving Pool Shock

Price Value Ratio :Our Results

  • Why We Picked It

Pool essentials shock treatment is fast dissolving and clears cloudy water fast! This awesome pool treatment reduces chlorine order and controls bacteria. This powerful pool shock was designed for easy, weekly pool shocking. Apply this product directly into the deep end of the pool. Shock your pool weekly and apply more shock after heavy use, high temperatures, or rain. Great option!

Clorox Pool & Spa Algaecide And Clarifier Part Number 42128CLX
Our 4 Pick Pool Algaecides

  • Pros & Cons
  • Suitable For All Pool Types
  • Prevents And Treats Pool Algae
  • Non-Foaming With Built In Clarifier

Price Value Ratio :Our Results

  • Why We Picked It

Suitable for all pool types, Clorox pool & spa algaecide and clarifier is the perfect choice for your swimming pool! This pool algaecide prevents and treats pool algae and features a non-foaming formula with a built-in clarifier. This awesome pool algaecide controls algae growth in your pool, without foaming, and helps remove dead algae through the filter with its built-in clarifier.

Clorox Non-Foaming Pool & Spa Green Algae Eliminator2 32 oz
Our 5 Pick Pool Algaecides

  • Pros & Cons
  • Suitable For All Pools
  • Non-Foaming Formula
  • Preventative Treatment

Price Value Ratio :Our Results

  • Why We Picked It

It is important to be one step ahead of algae. Clorox non-foaming pool & spa green algae Eliminator2 is suitable for all pools types. Consider using this preventative algaecide weekly if your pool is prone to algae or when the temperature increases during the peak of summer. We like this algaecide because it is good for all pool types and it kills and prevents green algae fast.

Clorox Pool & Spa XtraBlue Algaecide All-In-One Algae Killer 40 oz
Our 6 Pick Pool Algaecides

  • Pros & Cons
  • All-In-One Algae Killer
  • Treats Up To 25,000 Gallons
  • Kills Green, Mustard And Black Algae

Price Value Ratio :Our Results

  • Why We Picked It

The Clorox Pool & Spa XtraBlue Algaecide is an all-in-one algae killer. This awesome pool algaecide treats up to 25,000 gallons and kills green, mustard and black algae. We like this pool algaecide because it is simple to use. You just pour in the recommended amount and watch the algae disappear when your filter pump is running. This pool algaecide is a great choice for most swimming pools.

McGrayel Algatec Super Algaecide For Green, Yellow And Black Algae
Our 7 Pick Pool Algaecides

  • Pros & Cons
  • Prevents Algae Regrowth
  • Kills Most Algae In 8 To 24 Hours
  • Kills Green, Yellow And Black Algae

Price Value Ratio :Our Results

  • Why We Picked It

McGrayel Algatec Super Algaecide works great on green, yellow and black algae. This awesome pool algaecide kills most algae in 8 to 24 hours. We like this pool algaecide because it will not interfere with pool water pH or sanitizer levels and you can swim immediately after treatment. This pool algaecide is saltwater friendly and contains no metals, bromides, or quats. A great choice for most pools.

hth Pool Algaecide Super Algae Guard 60 (67064) Non-Foaming
Our 8 Pick Pool Algaecides

  • Pros & Cons
  • 60% Strength
  • Non-Foaming Formula
  • Kills Green, Yellow And Black Algae

Price Value Ratio :Our Results

  • Why We Picked It

HTH pool algaecide super algae guard is a 4-in-1 formula that kills and controls green, black, and yellow algae growth. This pool algaecide has 60% strength & when used regularly, it will prevent & kill green, black & yellow algae. We love the non-foaming formula! Don't let algae keep your family from swimming! This pool algaecide kills even the toughest algae blooms! This is an absolutely awesome choice for your pool!

In The Swim Super Pool Highly Concentrated Algaecide
Our 9 Pick Pool Algaecides

  • Pros & Cons
  • Suitable For All Pools
  • Not Available In California
  • Powerful And Highly Concentrated

Price Value Ratio :Our Results

  • Why We Picked It

Powerful and highly concentrated, the In The Swim pool algaecide is a great choice! Suitable for all types of swimming pools, this pool algaecide can be applied to in-ground or above ground pools. 4 ounces can treat up to 10,000 gallons of water. It contains 23.5% copper triethanolamine complex as the active ingredient. Overall, we were very happy with this swimming pool algaecide. Worked great in our pool!

PoolRx Pool Unit #101066 6 Month Algaecide Treats 20k-30k Gallons
Our 10 Pick Pool Algaecides

  • Pros & Cons
  • Effective Up To 6 Months
  • Eliminates All Types Of Algae
  • Treats 20k-30k Gallons Of Water

Price Value Ratio :Our Results

  • Why We Picked It

PoolRx pool algaecide treats 20k-30k gallons of water and is effective for up to 6 months. We like this pool algaecide because it is easy to use and eliminates all types of algae. Simply place in pump basket or skimmer basket of your swimming pool and you're ready to go! You will love this pool algaecide because it eliminates all types of algae and reduces overall chemical usage. Simplify your pool or spa care with this pool algaecide.

SeaKlear 90-Day Algae Prevention & Remover, 1 Quart
Our 11 Pick Pool Algaecides

  • Pros & Cons
  • 90-Day No Algae Guarantee
  • Non-Foaming And Non-Staining
  • Kills Green, Yellow And Black Algae

Price Value Ratio :Our Results

  • Why We Picked It

SeaKlear 90-day algae prevention and remover is a great choice for most pools! This pool algaecide is non-foaming and is made from a non-staining formula that kills green, yellow and black algae! We like this pool algaecide is reliable and effective and has a 90-day no algae guarantee. 16 ounces treats 10,000-gallons of pool water. We like this pool algaecide because it prevents algae growth in all pool types. Overall, a great choice!

EasyCare PoolTec Algaecide, Clarifier And Chlorine Salt Cell Booster
Our 12 Pick Pool Algaecides

  • Pros & Cons
  • Superior Algae Control
  • Cuts Chlorine Use By 25% Or More
  • Substantially Improves Water Quality

Price Value Ratio :Our Results

  • Why We Picked It

Cut chlorine use up to 65 percent with EasyCare PoolTec algaecide, clarifier and chlorine salt cell booster. This pool algaecide provides superior algae control with easier overall pool maintenance. One bottle of this pool algaecide will treat the average 20,000-gallon pool. We like this algaecide because it substantially improves water quality and swimmer's comfort. You will like this algaecide because it maintains clean, clear water.

Pool Mate Algaecide 50 Swimming Pool Algaecide, 1-Quart, 2-Pack
Our 13 Pick Pool Algaecides

  • Pros & Cons
  • Prevents And Kills Algae
  • Suitable For All Pool Types
  • Kills Green, Yellow And Black Algae

Price Value Ratio :Our Results

  • Why We Picked It

Suitable for all pool types Pool Mate swimming pool algaecide is an excellent choice! This pool algaecide keeps pool water sparkling clean, clear of visible green and blue-green algae, slime and green-brown colors. This algaecide is a concentrated formula that is non-staining and leaves absolutely no residue. This pool algaecide is compatible with most chemicals used in pool water and will not damage tile, concrete, metal or plastics.

In The Swim Super Pool Concentrated Algaecide 1/2 Gallon
Our 14 Pick Pool Algaecides

  • Pros & Cons
  • Suitable For All Pools
  • Comes In 2 Half Gallon Jugs
  • Powerful And Highly Concentrated

Price Value Ratio :Our Results

  • Why We Picked It

Powerful and highly concentrated the In The Swim super pool concentrated algaecide is an awesome choice! We like this pool algaecide is because it is suitable for all swimming pools! This algaecide comes in 2 half-gallon jugs for easy use. 4 ounces treats 10,000 gallons of pool water. This algaecide is not recommended for use in well water. It contains 23.5% copper triethanolamine complex as the active ingredient. Great choice!

In The Swim Chlorine Pool Shock, 24 One Pound Bags
Our 15 Pick Pool Algaecides

  • Pros & Cons
  • Use 1 Pound Per 10,000 Gallons
  • Powerful Chlorine Shock Treatment
  • Quickly Eliminates Algae And Bacteria

Price Value Ratio :Our Results

  • Why We Picked It

This powerful chlorine shock treatment that is great for regular maintenance! It quickly eliminates algae, bacteria, and other harmful contaminants from your pool water. The main active ingredient in this pool shock is 68% calcium hypochlorite for quick sanitizing. This easy to use swimming pool shock effectively treats 10,000 gallons of pool water per bag. Kills visible algae blooms and invisible bacteria that are dangerous to swimmers.

Pool Algaecide Comparison

Related Pool Upgrades

Pool Shock

Pool Shock will quickly eliminate algae, bacteria, and other harmful contaminants from your pool water. Keep your pool water crystal clear by using pool shock weekly. See our picks for best pool shock.

Pool Pump Timers

Avoid the inconvenience of plugging and unplugging your pool pump with a pool pump timer. Most pool pump timers are waterproof and can save you money on your next power bill.

Pool Clarifiers

Sometimes, your pool filter needs help getting rid of small particles. A good pool clarifier binds these small particles into larger ones, allowing your filter to remove them easier.

Pool Thermometers

It is getting a little warmer outside. Are you ready to dip your toe in the pool? A good pool thermometer will help you make your decision a little easier. See our picks for the best pool thermometer.

Above Ground Pool Ladders

Make getting in and out of the pool easy with a replacement above ground pool ladder. Most replacement pool ladders are better quality and have slip-resistant steps to prevent falling.

Chlorine Tablets

Chlorine Tablets can help you keep your pool water crystal clear all season long. A good pool chlorine tablet sanitizes, clarifies, and protects your swimming pool against bacteria and algae.

Frequently Asked Algaecide Questions

What is a pool algaecide?

A pool algaecide is a chemical treatment used to kill and prevent algae growth in swimming pools. It helps maintain water clarity and overall pool health.

What are the different types of pool algaecides?

There are several types of pool algaecides, including copper-based, quaternary ammonium, and polymer-based algaecides. Each type has its own method of combating algae and is suitable for different pool conditions.

How do copper-based algaecides work?

Copper-based algaecides contain copper sulfate or copper chelates, which are effective in killing algae by disrupting their cellular processes. They also provide long-lasting protection.

Are there any disadvantages to using copper-based algaecides?

Yes, copper-based algaecides can sometimes lead to staining of pool surfaces and can increase the level of copper in the water. Regular monitoring and maintenance are required to avoid these issues.

What is the difference between a shock treatment and an algaecide?

A shock treatment is a high dose of chlorine used to rapidly kill algae and other contaminants, while an algaecide is a specific chemical designed to prevent and control algae growth over time.

How often should I use algaecide in my pool?

The frequency of algaecide use depends on your pool's conditions and the type of algaecide. Generally, it is used weekly or bi-weekly, but always follow the manufacturer’s instructions for best results.

Can I use algaecide if my pool is already green with algae?

Yes, algaecide can be used to treat an existing algae problem. However, for severe cases, it's often combined with a shock treatment to quickly address the algae and then followed up with regular algaecide use.

Are algaecides safe for all types of pools?

Most algaecides are safe for use in various types of pools, including concrete, fiberglass, and vinyl-lined pools. Always check the product label to ensure compatibility with your pool type.

How do I choose the best algaecide for my pool?

Choose an algaecide based on your pool’s specific needs and the type of algae you are dealing with. Consider factors like the pool material, water chemistry, and the severity of the algae problem. Reading product reviews and consulting with a pool professional can also help.

Where can I purchase the best pool algaecides?

High-quality pool algaecides can be purchased from pool supply stores, online retailers, and home improvement stores. Look for reputable brands and check customer reviews to ensure you are getting a reliable product.

Conclusion

Choosing the right pool algaecide can make a significant difference in maintaining a clean and inviting swimming pool. By understanding the different types of algaecides and their specific applications, you can make an informed decision that best suits your pool’s needs. Whether you opt for a copper-based solution, a polymer-based treatment, or a natural alternative, regular use of an effective algaecide will help ensure your pool remains algae-free and ready for enjoyment.

If you are looking for an awesome pool algaecide we recommend our # 1 pick the Clorox Pool & Spa Algaecide And Clarifier Part Number 42128CLX. Clorox Pool & Spa algaecide and clarifier is the perfect choice for your swimming pool! This pool algaecide prevents and treats pool algae and features a non-foaming formula with a built-in clarifier. This awesome pool algaecide controls algae growth in your pool, without foaming, and helps remove dead algae through the filter with its built-in clarifier.

The next pool algaecide we recommend is the Clorox Non-Foaming Pool & Spa Green Algae Eliminator2 32 oz. It is important to be one step ahead of algae. Clorox non-foaming pool & spa green algae Eliminator2 is suitable for all pools types. Consider using this preventative algaecide weekly if your pool is prone to algae or when the temperature increases during the peak of summer. We like this algaecide because it is good for all pool types and it kills and prevents green algae fast.

Our third pick is the Clorox Pool & Spa XtraBlue Algaecide All-In-One Algae Killer 40 oz. The Clorox Pool & Spa XtraBlue Algaecide is an all-in-one algae killer. This awesome pool algaecide treats up to 25,000 gallons and kills green, mustard, and black algae. We like this pool algaecide because it is simple to use. You just pour in the recommended amount and watch the algae disappear when your filter pump is running. This pool algaecide is a great choice for most swimming pools.

Thank you for taking the time to read our Pool Algaecide research!