The 15 Best Pool Algaecide 2020 Reviews & Top Pick


What is the best pool algaecide? That is the question that most pool owners ask when they are faced with the problem of algae. These plants can be annoying and even ruin how your pool looks and are unhealthy.  

Algae reproduce within a short time if the condition favors them, such as sunlight, warm temperatures, and failing filtration and circulation systems. Phosphates can also increase the chances of algae development. 

If you have done everything to no avail, then you need to try the best pool algaecide. Below we have a list of the top 15 models that work effectively.

Reviews of Top 15 Algaecides for 2019 – Editors’ Choice 

Here are the algaecides that our editors chose as the top models on the market today.

1. Clorox Pool & Spa 42032CLX Green Algae Eliminator

The 42032CLX is an instant algae eliminator that removes and prevents green algae from infesting your swimming pool. That makes it ideal for green algae, and it comes with a non-foaming formula that lets you use it in any pool, even saltwater pools. 

The product gives you clear-water that you can be excited to get into every time. You don’t need to use it every, providing value for your money. 

You can add 1.5 fl oz of the product in a 10k gallons pool after backwash, heavy rain, or partial drain.


  • Weekly use
  • Remove green algae
  • For all pool types 


  • Should be used with other algaecides

2. HTH 67064 Pool Algaecide Super Algae Guard

One of our top choices is the HTM 67064 product that comes from this trusted brand. It is an all-around model that kills and prevents the development of algae and is mainly for yellow algae, black algae, and green algae.

The product is quite concentrated and provides up to 60% strength so that you can remove all algae with their roots. Besides, you can use it as a shock product for maintaining your swimming pool.


  • Non-forming formula
  • Strong, active ingredients 
  • Able to prevent contaminants 


  • The filter needs to run for 12 hours 

3. Clorox Pool & Spa XtraBlue Algaecide 

For a fast and effective pool algae elimination, you need to try the great all-in-one product. It provides a smart way of cleaning your swimming pool and ensuring that it remains safe for your use. 

It contains 3.3 percent copper that helps to kill and prevent these plants, and it is a non-forming product. The 40 oz. container of the product can serve a pool of 25K, and it doesn’t stain the surfaces or floors.

It is ideal for inground swimming pools.


  • A multi-function product
  • Doesn’t stain your pool
  • For inground and above ground pools 


  • Need to wait 24 hours to use your pool 

4. In The Swim Super Pool Algaecide 

Another non-foaming product for killing and inhibiting algae is the In The Swim Supermodel and it is one of the best out there. It has safety assurance that lets you swim as soon as you add it into your pool.

The model has copper that removes all contaminants effectively. That means you get an algae-free pool as soon as you add it. You also use just a small amount to ensure that you get value for your money.


  • Ideal for black algae 
  • Safe to the user
  • Comes in different quantities


  • A bit expensive 

5. SeaKlear 90-Day Algae Prevention & Remover

SeaKlear 90-Day model can be listed as one of the best algae killers on the market today, and it comes in high concentration to remove all elements instantly. One thing you should note about this product is that it gives 90-days of algae-free swimming pool. 

It works for all types of plants like yellow, black, green, and others. Besides, it is a non-staining and non-foaming product that can leave your pool in top condition.

The product has 11.8% copper sulfate pentahydrate and 3% copper. 


  • Quite effective 
  • For all algae
  • Non-staining and non-foaming


  • Doesn’t last long 

6. Pool Mate 1-2150 Algaecide Swimming Pool Algaecide 

Pool Mate 1-2150 is a non-metallic algaecide that works perfectly for all types of pools, including Gunite, Concrete, Fiberglass, and Vinyl. It is one of those products that you can use to kill all kinds of algae, including mustard, yellow, pink, black, and green algae. 

The algaecide not only kills these contaminants but also prevents them, and you wait for just 15 minutes before you can use your pool. You should use the model as a weekly maintenance chemical by adding 2 oz. in 10K gallons.


  • For all swimming pools
  • For all types of algae 
  • Takes effect instantly 


  • Need to wait to use the pool 

7. PoolRX 101003 Blue Units Swimming Pool Algaecide 

PoolRX 101003 is a product that can clean a swimming pool of up to 20K gallons of water. That is all possible due to its powerful formula, and you should add it to the skimmer basket or pump. 

The package lasts for up to six months, and each part works individually and provides a long-lasting effect. It can quickly kill all algae and prevent them from growing in the future. 

Besides, it is easy to use the product.


  • Easy to use
  • For all kinds of algae 
  • Ideal for large pools 


  • You need to scrub your pool 

8. McGrayel Algatec 10064 Super Algaecide 

If you want a product for black, yellow, and green algae, then you should try the McGrayel Algatec 10064 Super Algaecide. It doesn’t change your swimming pool sanitizer and pH levels, and you can swim as soon as you add it. 

The model kills algae and prevents them from regenerating any time soon. It works within 24 hours and can be ideal for saltwater swimming pools. 

Another thing about the product is the ability to clarify the water after cleanup.


  • For saltwater pool
  • Doesn’t affect pH
  • Easy to add


  • Takes over 24 hours

9. Kem-Tek KTK-50-0006 Pool & Spa Algaecide

Kem-Tek Pool and Spa KTK-50-0006 is a 60% concentrated product that works effectively to remove green algae. Besides, it helps to prevent them from growing again, and it boasts of non-foaming formula. 

That means it cannot destroy your swimming pool, and you can be confident of getting clear water.  Its effect lasts longer in your pool and can kill other organisms in your swimming pool.

You can also use it in a saltwater swimming pool, and it is not expensive.


  • Long-lasting product
  • Friendly for filters 
  • Crystal clear water


  • Should wait before using your pool 

10. Applied Biochemist 406303A Black Algaetrine Algaecide 

Applied Biochemist 406303A product comes with a combination of different formulas that helps to remove black algae. It has copper and a penetrating agent that removes and prevents algae from developing in the future.

Besides, it is a safe product that allows you to swim without waiting for it to take effect. It also doesn’t discolor your swimming pool or water and should be applied in the morning.

You can use it in a pool with bromine and chlorine.


  • Safe product 
  • Easy to add
  • Safe for bromine and chlorine


  • Takes time to bring the effect 

11. Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment 

One thing you should note is that this model is used with pool shock to remove all pink, brown, yellow, and green algae from your pool. It is easy to use it, and you don’t need to scrub your pool for the algae to be removed. 

The product is an excellent alternative to using harsh pool chemicals, and it is a non-toxic model that you can use on various surfaces, even vinyl. You can add it to your pool chlorine generator to take effect in your facility.


  • Two pounds for 15,000 gallons 
  • For vinyl liners 
  • For brown and pink algae


  • A bit expensive 

12. Pool Mate 1-2190 Black Algaecide 

Pool Mate 102190 Black Algaecide is another non-metallic product that you can add to your pool to kill all contaminants. You can use it for Gunite, Concrete, Fiberglass, and Vinyl swimming pools.

As a non-forming model, it prevents your pool from staining and remains safe to the swimmers. It also prevents algae from developing, and you can add 4 oz. in a 10K gallons pool.


  • Non-metallic 
  • For all pools 
  • Easy to add


  • Not economical 

13. BioGuard Algae Complete

BioGuard Algae Complete is an algae killer and preventer that can transform your swimming pool and make it more user-friendly. It is a product that you should add at least once per week in your pool. 

One thing you should note is that it kills black, mustard, and green algae and prevent them from re-growing. It is safe to use in all facilities.


  • Kills algae completely 
  • Safe for human 
  • Easy to add


  • Takes time to take effect

14. Leisure Time Q Spa Algaecide Clarifier

The algaecide destroys present algae and prevents new ones from infesting your swimming pool. It is a model to use with bromine, chlorine, biguanide, and ozone sanitizers. 

You can swim within 15 minutes after adding the algaecide into your swimming pool and doesn’t slim the walls. Another thing is that it is a non-foaming model that won’t affect your pool.


  • Can use the pool within 15 minutes 
  • Prevent algae growth 
  • Can be used with other pool chemicals


  • Need a lot to kill contaminants 

15. No Mor NMP-C12 Problems United Chemical No Mor Problems 

If you want a product that can work magic, then you should choose the No Mor NMP-C12 model. It is a well-made product that can kill all algae from your pool to leave it safe for users.

One plus of the algaecide is the fact that it gives clear water, meaning that you don’t need to wash your pool regularly. That means it helps the filter and makes it last longer. 

You can use the product with other pool products.


  • Clean the filter
  • No brushing or shocking 
  • Clears the water


  • A strong chemical 

Types of Pool Algaecide 

Due to the different kinds of algae, there are different types of products you can you to kill and prevent them. They are often classified as follows:

Quat Pool Algaecides 

Quat or Quaternary Ammonium compounds are detergents that remove most kinds of algae in a swimming pool. They work like how a dish soap removes grease on your pan.

That means they attach to the algae cells and dissolve their membrane to allow the chlorine to get into the contaminant. Quat algaecides are quite economical and come in 10% or 50% concentrations. 

Sadly, if you add a lot of them, they might lead to foaming because they are soap. On the north side is that they don’t stain your pool. 

Polyquat/Polymer Pool Algaecides 

These are quite vibrant and come with two main selling points over other types of algaecides. They are non-staining and non-foaming.

They work like the Quat models by attaching to the negatively charged cells of algae, spreading to the bloom to ensure that the contaminants don’t grow. These products last two times longer than Quat models, but they are more expensive. 

They come in 30% or 60% concentrations.

Metallic Pool Algaecides 

They use positively charged metal ions to attach the outer cell of algae, poisoning the nucleus of every cell to prevent an infestation. The bad thing about these products is that they can cause staining if you over-use them. 

You should use metallic products if your pool in infested by black algae. 

Sodium Bromide 

Sodium bromide is not classified as an algaecide, but it works wonder when killing and preventing algae growth. It works with your pool chlorine to remove algae and ensure they don’t get into your pool any time soon.

Its reaction can quickly reduce the level of free chlorine in your swimming pool. 

Metallic vs Polymer vs Quat: Which One to Buy?

Quat algaecides are cost-effective, but they can easily mess your swimming pool by creating foams. Polymer models do not stain your facilities or create foam, but they are more expensive.

Metallic algaecides are the most effective of all the three types, but they can easily stain your pool due to their copper element. 

We would recommend you use the polyquat models like the ones we have reviewed above. 


Now you can choose the best pool algaecide on the market today to remove all algae in your pool. These products can kill black, yellow, green, pink, mustard, and even other contaminants in your pool.

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