Best Pool Algaecides in 2026

NOTE: WE ARE CURRENTLY UNABLE TO SHIP SUPER ALGAECIDE TO THE STATE OF CALIFORNIA.. We apologize for the inconvenience.

Provides superior algae-fighting power with long lasting effects

Safe enough to swim directly after use

Concentrated algaecide for all types of algae

Should be part of a regular pool maintenance program to prevent algae

Weekly addition of this product will reduce overall maintenance costs and give pools desired water quality

Updated Formula-3 Active Ingredients

Eliminates all types of Pool Algae

Reduces chemical demand

Simply place in pump basket or skimmer basket

Eliminates all types of Algae

Reduces Chemicals

Prevents and treats pool algae

Built in clarifier

Non-foaming formula

BENEFITS: Kills green and mustard algae

USE: Add a preventative dose biweekly and be algae free

COMPATIBILITY: Works with bromine, chlorine, salt water, ozone, bigaunide and minerals

Reliable & Effective

90-days no algae guarantee (when used according to instructions in balanced pool water)

Kills and prevents blue-green, green, yellow and black algae

Non-Metallic Algaecide

For All Pool Types (Vinyl, Fiberglass, Concrete, Gunite, etc.)

Effective against all algae types (Green, Black, Yellow, Mustard, Pink)

CONTAINS 7.1% CHELATED COPPER (Chelated To Protect From Staining), Providing Superior Algae-Fighting Power With Long Lasting Effects.

EFFECTIVE AGAINST MOST TYPES OF ALGAE - YET SAFE ENOUGH TO SWIM DIRECTLY AFTER USE!

INITIAL DOSAGE: 4 Oz. Per 10,000 Gallons; Maintenance Dosage: 2 Oz. Per 10,000 Gallons.

KEEP ALGAE AT BAY - This product is effective in controlling a broad range of algae. Especially effective against Chara(Stone wart), Spirogyra, Cladophora, Vaucheria Ulothrix, Microcystis, Oscillatoria, Mustard Algae and Black Algae. The triethanolamine in this product prevents the precipitation of the copper with the carbonates or bicarbonates in the water. Rx Clear Copper Algaecide is used to prevent and kill unwanted infestations in your swimming pool.

COAT THE WALL - Algaecide coats the walls of the swimming pool, keeping algae in suspension. Surfactant splits open algae cells, helping to destroy them. The Rx Clear Copper Algaecide coats the pool wall, keeping your swimming pool crystal clear.

BIWEEKLY MAINTENANCE - Each bottle of Algaecide is 32 ounces of fluid. Swimming pools require only 4 oz. of Rx Clear Swimming Pool Algaecide every two weeks per every 10,000 gallons of water.

Simply place in pump basket or skimmer basket

Eliminates all types of Algae

Reduces Chemicals

Treats and prevents green, black and yellow algae

Clarifies water

Non-foaming

No waiting to swim - treated water can be used immediately.

Application: Dilute with at least nine parts of water. (See dilution chart on back of bottle. ) Sprinkle solution around edge of pool.

Chlorine, bromine and ozone sanitizers, as well as salt water pools.

Strongest poolife liquid algaecide available

Non-foaming

Treats and prevents algae formation and growth in swimming pools, spas, and decorative fountains.

BENEFITS: Kills all types of algae and prevents future algae blooms in your swimming pool for up to 3 months so you can get back to enjoying your summertime fun

USE: Apply directly to the pool regularly for easy DIY pool care; For best results, use with other HTH pool care products

COMPATIBILITY: Great for a variety of swimming pool types, including saltwater systems

BENEFITS: Kills green algae and prevents future algae blooms in your swimming pool so you can get back to enjoying your summertime fun

USE: Apply add the product directly to the pool with the pump running; Use regularly for maximum effectiveness

COMPATIBILITY: Great for vinyl-lined pools and saltwater systems

New formula with 3 active Ingredients

Eliminates all types of Pool Algae

Reduces chemical demand

Premium formula, highly effective, kills ALL types of algae

Fast-acting, non-foaming, producing results in 24 hours

Use in chlorine or bromine pools with all surfaces or filter types

Additional minerals for Pool RX+ pool unit

Eliminates all types of Pool Algae

Reduces chemical demand

Effectively kills algae

Protects pools for up to six months

Reduces chlorine demand by up to 50%

Additional minerals for Pool RX pool unit

Eliminates all types of Pool Algae

Reduces chemical demand

Controls the Growth of Algae in Swimming Pools

Effective Both as a Preservative and as a Corrective Treatment

Highly Concentrated

CONTAINS: BioGuard Algae Complete (72 oz), LeisureQuip ScumBoat Floating Scum Absorber, and LeisureQuip Pool Care Log Book

Algae prevention weekly treatment for swimming pools - Once a week dual action algaecide

Prevents and Kills Green, Mustard and Black Algae

Quart black liquid algaecide poly 60 for swimming pools

Non-metallic & non-foaming algaecide

If pool is green use 11-17 oz per 10,000 gallons (29,090 - 18,823 gallons per bottle) & should be used with chlorine shock combined

BENEFIT: Get long-lasting protection from extreme algae; This non-foaming algae control kills and prevents blooms of all algae types

OUR STRONGEST ALGAE CONTROL: Kills, prevents and protects against regrowth of heavy green, black and mustard swimming pool algae for up to 3 months

NON-FOAMING, FAST-ACTING: Add HTH Algae Guard Ultra directly to your swimming pool water and swim right away

Best Algae Killer for Pools: Algaecide 60 is the best algae preventer for pools; it prevents all types of algae in all types of swimming pools

Effective Pool Treatment: Doheny's Algaecide 60 is metal-free and will leave no stains behind when applied

Algae Control for Pool: One bottle treats up to 160,000 gallons; use once a week to prevent algae growth