Sadie's Pool Guide

The 15 Best Pool Algaecides

By Sadie Brooks

Using a pool algaecide will help keep your swimming pool sparkling clean all summer long! Having algae makes it harder for the chlorine to keep your pool clean. In our reviews, we took a look at the best pool algaecides for 2020. If your pool is prone to algae, you should consider using a preventative algaecide weekly.

Pool Algaecides

Top Picks For Best Pool Algaecide

Best Pool Algaecide Reviews

PoolRx Pool 6 Month Algaecide Treats 7.5k-20k Gallons, Single Unit Part Number 101001 On Amazon

Our 1 Pick Pool Algaecides

Overall Rating:Our Review Rating

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!

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

Kem-Tek Pool And Spa 60-Percent Concentrated Algaecide, 1 Quart KTK-50-0006 On Amazon

Our 2 Pick Pool Algaecides

Overall Rating:Our Review Rating

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!

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

Pool Essentials Fast-Dissolving Shock Treatment Value 6 Pack (13.4 oz Bags) On Amazon

Our 3 Pick Pool Algaecides

Overall Rating:Our Review Rating

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!

  • Controls Bacteria
  • Clears Cloudy Water
  • Fast-Dissolving Pool Shock

Clorox Pool & Spa Algaecide And Clarifier Part Number 42128CLX On Amazon

Our 4 Pick Pool Algaecides

Overall Rating:Our Review Rating

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.

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

Clorox Non-Foaming Pool & Spa Green Algae Eliminator2 32 oz On Amazon

Our 5 Pick Pool Algaecides

Overall Rating:Our Review Rating

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.

  • Suitable For All Pools
  • Non-Foaming Formula
  • Preventative Treatment

Clorox Pool & Spa XtraBlue Algaecide All-In-One Algae Killer 40 oz On Amazon

Our 6 Pick Pool Algaecides

Overall Rating:Our Review Rating

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.

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

McGrayel Algatec Super Algaecide For Green, Yellow And Black Algae On Amazon

Our 7 Pick Pool Algaecides

Overall Rating:Our Review Rating

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.

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

hth Pool Algaecide Super Algae Guard 60 (67064) Non-Foaming On Amazon

Our 8 Pick Pool Algaecides

Overall Rating:Our Review Rating

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!

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

In The Swim Super Pool Highly Concentrated Algaecide On Amazon

Our 9 Pick Pool Algaecides

Overall Rating:Our Review Rating

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!

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

PoolRx Pool Unit #101066 6 Month Algaecide Treats 20k-30k Gallons On Amazon

Our 10 Pick Pool Algaecides

Overall Rating:Our Review Rating

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.

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

SeaKlear 90-Day Algae Prevention & Remover, 1 Quart On Amazon

Our 11 Pick Pool Algaecides

Overall Rating:Our Review Rating

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!

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

EasyCare PoolTec Algaecide, Clarifier And Chlorine Salt Cell Booster On Amazon

Our 12 Pick Pool Algaecides

Overall Rating:Our Review Rating

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.

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

Pool Mate Algaecide 50 Swimming Pool Algaecide, 1-Quart, 2-Pack On Amazon

Our 13 Pick Pool Algaecides

Overall Rating:Our Review Rating

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.

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

In The Swim Super Pool Concentrated Algaecide 1/2 Gallon On Amazon

Our 14 Pick Pool Algaecides

Overall Rating:Our Review Rating

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!

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

In The Swim Chlorine Pool Shock, 24 One Pound Bags On Amazon

Our 15 Pick Pool Algaecides

Overall Rating:Our Review Rating

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.

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

Pool Algaecide Comparison

Recommended Swimming Pool Upgrades

Swimming Pool Games

Make a splash all summer long with fun swimming pool games! Your kids will have a great time and you will too. In our reviews, we took a look at this years best swimming pool games.

Swimming Pool Floats

Did your old swimming pool float make it through the winter? Don't worry just get an awesome new one. In our reviews, we took a look at the best swimming pool floats for fun this summer!

Above Ground Pools

If you want to go swimming this summer without breaking the bank an above ground pool is an excellent choice! Above ground pools are easy to set up and you can be swimming in just a few hours.

Conclusion

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 reviews!