Best Seaklear in 2026

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

Pool Water Clarifier

100% Non-Toxic, Biodegradable

Safe To Use With All Sanitizers

Restores, polishes and maintains water clarity

Removes trace metals and fine suspended particles

Simply poke a hole and drop the capsule into you pool

Pool Chemicals

Pool Chemicals

Clarifier

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

Non-foaming formula

Effective kill and preventative treatment

Suitable for all pools

! quart bottle

Non-metallic, non-foaming, low-odor polymer-based algaecide

Kills all types of algae, including pink algae

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

Simply place in pump basket or skimmer basket

Eliminates all types of Algae

Reduces Chemicals

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

MULTI-PURPOSE: Raise the levels for chlorine, water hardness, and pH in your swimming pool giving you crystal clear water.

INCREDIBLY STRONG: Due to its high percentage of chlorine, Super Shock is very effective and efficient for a quick chlorine boost.

MIX BEFORE YOU FIX: Add this powder to a bucket of water before you add it to your pool. Add a 1 lb bag per 10,000 gallons of pool water.

6 month algaecide

Eliminates all types of algae

Reduces chemical demand

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

1 quart bottle

Patented formula prevents algae growth while clarifying pool water

Safe for all swimming pool surfaces and all filter types

BENEFITS: Quickly rids pools of mustard algae outbreaks

USE: Swimming may be resumed several hours after treatment

COMPATIBILITY: Works with all types of pools and all sanitizers including bromine, chlorine, salt water, ozone and minerals

Can be applied to inground or above ground pools/spas

Recommended for use in well water to prevent staining

Fast acting liquid algaecide prevents green and yellow mustard algae