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10 Best swimming pool algaecides in Canada
Best Choice01Aqua CoastalLiquid Pool Algaecide (50% Strength) (3.6L)
Main highlights- Safe to swim 15 minutes after the treatment without any risks of irritation or hair discolouration
- Kills existing algae and prevents algae growth
- Fast acting and effective formula
- Effective in eliminating 'black', 'green' and other types of stubborn algae in your pool
9.8Exceptional
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- 02
GenericClub Pro Algaecide 60% | Controls Algae in Swimming Pool Waters | Can Use for Pool Opening & Closing | Use with Chlorine & Salt Pools | Concentrated
Main highlights- ️ Effective long-lasting algae control: The high concentration provides extended protection against green, black, and mustard algae, reducing the frequency of treatments needed.
- Non-foaming formula: Unlike some algaecides, this formulation is non-foaming, making it ideal for use in pools with high agitation, such as spas and fountains.
- Helps clarify water: The polymer-based ingredients can aid in water clarity by aggregating fine particles for easier filtration.
- Prevents regrowth: Regular use can help prevent algae spores from taking hold, minimizing the risk of blooms even under warm, sunny conditions.
- ️ Compatible with most sanitizers: Works well alongside chlorine, bromine, and saltwater systems without reducing sanitizer effectiveness.
9.7Exceptional
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Value for Money03
GenericClub Pro Algaecide 40% | Controls Algae in Swimming Pool Waters | Can Use for Pool Opening & Closing | Use with Chlorine & Salt Pools | Pool Chemicals
Main highlights- ️ Effective long-lasting algae control: The high concentration provides extended protection against green, black, and mustard algae, reducing the frequency of treatments needed.
- Non-foaming formula: Unlike some algaecides, this formulation is non-foaming, making it ideal for use in pools with high agitation, such as spas and fountains.
- Helps clarify water: The polymer-based ingredients can aid in water clarity by aggregating fine particles for easier filtration.
- Prevents regrowth: Regular use can help prevent algae spores from taking hold, minimizing the risk of blooms even under warm, sunny conditions.
- ️ Compatible with most sanitizers: Works well alongside chlorine, bromine, and saltwater systems without reducing sanitizer effectiveness.
9.6Exceptional
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- 04Generic
Pool Guardian Liquid Algaecide 10% (8L) Kills Black Green & Mustard Algae Fast Acting Swimming Treatment Prevents Future Growth Safe for All Surface Types Concentrated Professional Grade Formula
Main highlights- SAFE FOR SWIMMERS IN JUST 15 MINUTES - Unlike many pool algaecides that require hours of waiting, our fast-acting formula lets you and your family safely return to swimming just 15 minutes after treatment. There is no risk of skin irritation, eye discomfort, or hair discoloration, making it ideal for families, kids, and pets. Enjoy continuous pool fun without long downtime or harsh chemical side effects while maintaining a healthy, algae-free swimming environment.
- POWERFUL ALGAE ELIMINATION - Pool Guardian Liquid Algaecide features a concentrated 10% active formula that effectively eliminates black algae, green algae, mustard algae, and other stubborn algae strains that commonly invade swimming pools. Whether you're battling a fresh algae bloom or dealing with deeply rooted infestations on walls and floors, this heavy-duty algaecide penetrates and destroys algae at the source, restoring your pool water to crystal clear clarity fast.
- LARGE 8 LITRE VALUE SIZE - This generous 8L bottle of Pool Guardian Liquid Algaecide provides exceptional value, treating large pools multiple times throughout the swimming season. Simply pour the recommended dose directly into your pool water while the pump is running for even distribution. Easy to use with clear dosing instructions on the label. Trusted by pool owners, pool service professionals, and property managers across Canada for reliable, effective, and affordable swimming pool algae control and water maintenance.
- KILLS & PREVENTS FUTURE ALGAE GROWTH - Pool Guardian doesn't just eliminate existing algae; it provides lasting residual protection that prevents new algae blooms from taking hold. Regular weekly maintenance doses keep your pool water sparkling clean, clear, and inviting all season long. Perfect for inground pools, above-ground pools, saltwater pools, and vinyl liner pools, this versatile algaecide helps reduce the need for costly shock treatments and extensive pool cleaning.
- FAST-ACTING CONCENTRATED FORMULA - Our professional grade 10% concentrated algaecide delivers rapid results, clearing cloudy, green pool water within 24 to 48 hours of application. The non-foaming formula works quickly to attack algae cells while remaining compatible with chlorine, bromine, and other pool sanitizers. A little goes a long way, making this 8L bottle an economical choice for pool owners who want maximum value and long-lasting protection throughout the entire swimming season.
9.3Excellent
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- 05
Aqua Coastal
AlgaeFree Pool Blocks Algaecide Pucks, 1.5KG, (5 x 300G)
Main highlights- Reduces chlorine consumption. Ideal for salt or chlorine pools
- Handy monthly slow release tablet. Helps to make make pool water sparkling clear
- Blackspot, Mustard & Green Algae Killer. Eliminates Algase from Walls, Grouting & Steps. Dual Function - eliminates & prevents algae growth.
- 1 Block in theskimmer eacg month will prevent & Kill any algae growth
9.2Excellent
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- 06Canada Pool Warehouse
HTH® Extra 60% Algaecide (2)
Main highlights- Will not harm liners
- This Item can not be returned.
- Suitable for all pool types and is ideal for winterizing.
- Non-foaming
- Great for start up with HTH EXTRA shock treatment
- Fast and effective treatment for green algae
- Can be used weekly for prevention
- 60% polymer
9.1Excellent
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- 07BioGuard
BioGuard Erase® (946mL) Effective Algae Destroyer (SKU 3108)
Main highlights- Uses copper sulfate as an effective agent to kill and control algae growth
- Used to kill green, blue-green, and mustard algae growth
- Should be pre-dissolved before use
- Noticeable results in 24-48 hours
- Can be used on all pool types and surfaces
8.9Very Good
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- 08
Next Gen Hot Tubs
Next Gen Hot Tubs Pool Opening & Closing Kit 100,000L
Main highlights- STAIN & SCALE CONTROL: Concentrated formula prevents and removes metal stains and scale caused by iron, copper, manganese, and calcium, keeping pool water and equipment crystal clear.
- PREVENT ALGAE GROWTH: Pool Algaecide 40 is effective against green, mustard, and black algae, providing long-lasting protection to keep water clean and clear.
- FAST & EASY MAINTENANCE: Simple dosing instructions make water treatment straightforward — just add to your pool water for a complete, hassle-free maintenance routine.
- COMPLETE POOL KIT: All-in-one opening and closing treatment kit for both above ground and inground pools, covering up to 100,000 litres.
- CHLORINE-FREE SHOCK TREATMENT: The Oxidizer Shock uses Potassium Monopersulfate (MPS) to eliminate organic contaminants, remove odours, and restore water clarity without chlorine or bromine.
8.8Very Good
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- 09BioGuard
BioGuard Algae Complete (1 Litre) (SKU 5872)
Main highlights- VERSATILE APPLICATION: Functions both as a weekly preventative treatment and rapid remedy, with dosing of 30-40 ppm for optimal effectiveness
- POOL COMPATIBILITY: Non-foaming and non-staining formula works effectively with most pool sanitizers while maintaining proper pH levels between 7.2-7.6
- MAINTENANCE FEATURES: Chelated formula prevents copper drop-out, ensuring consistent performance without staining pool surfaces or equipment
- FAST-ACTING TREATMENT: Delivers visible results within 24 hours when used as directed, making it an efficient solution for algae control
- DUAL-ACTION FORMULA: Powerful combination of polyquat and copper-based chemistry provides comprehensive protection against green, black, and mustard algae in swimming pools
8.7Very Good
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- 10HTH
HTH® Extra 60% ALGAECIDE l Genuine Product l Bulk Purchase l 1 Liter Bottles x (2)
Main highlights- Will not harm liners
- Weekly Maintenance Use: Use regularly to keep your pool algae-free and water crystal clear.
- Prevents and Eliminates: Effectively combats green, black, and mustard algae before they take over.
- Powerful Algae Killer: Contains 60% polyquaternary compound for strong, long-lasting algae control.
- Non-foaming
- Non-Foaming Formula: Ideal for use in all types of pools—won’t produce foam even with high agitation.
- Ideal for winterizing.
- Compatible with All Pool Types: Safe for vinyl, concrete, saltwater, and chlorine-treated pools.
- *Not returnable / Final Sale *
8.6Very Good
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