10 Best pool chemicals above ground in Canada

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Last Updated - 2025/08/02

Best Choice

01
Pool Supplies Canada

Pool Opening Kit & Closing Kit for Above Ground & Inground Pool | Complete All-in-One Treatment (100,000L) | Crystal Clear Water - Prevent Algae, Bacteria, Stains, Scale | Fast and Easy Maintenance

9.5 Simple to use

8.4 worth the money
Main highlights

🇨🇦 MADE IN CANADA: Pool Supplies Canada is a Canadian company and all our products are proudly MADE IN CANADA! Trust a Canadian brand created for Canadian families 🇨🇦
YOUR COMPLETE OPENING & CLOSING SOLUTION: This premium opening & closing kit for above ground and inground (and salt water) pools is designed to simplify seasonal maintenance for pools up to 100,000 liters (26,000 gallons). Whether you’re opening for Spring or closing for Winter, this all-in-one kit prevents algae, scale buildup, and cloudy water, ensuring your pool is ready to use when you need it most
SAVE TIME & MONEY ON POOL MAINTENANCE: This comprehensive pool chemical starter kit eliminates the need for extra purchases, giving you everything required to prevent pre-and-post season headaches. Reduce maintenance time, protect your pool investment, and ensure your water is swim-ready with minimal effort
SAFE FOR ALL POOL TYPES & EQUIPMENT: Whether you own an above ground, inground pool, or salt water pool, our opening/closing kit protects your liner, filter system, and surfaces from seasonal damage. Made with premium, fast-dissolving chemicals, it ensures your pool remains in peak condition all year long
POWERFUL ALGAE CONTROL & SCALE PREVENTION: Keep your pool water crystal clear year-round. The advanced formula eliminates algae growth and prevents scale deposits that can damage pool surfaces and plumbing. Works with chlorine, bromine, and saltwater pools for effortless water maintenance
EASY-TO-USE FORMULA FOR PERFECT BALANCE: No guesswork required—each component is pre-measured for pools up to 100,000 liters. Simply add the chemicals as directed, and let them do the work. Designed to stabilize water chemistry, this pool kit ensures proper pH levels, minimal scale, and long-lasting clarity
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9.9

Exceptional

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Value for Money

02
Pool Supplies Canada

Chlorine Pucks for Pool (6 Kg) - King Size 3” Stabilized Swimming Pool Chlorine Pucks | UV Protected Pool Sanitizer | Slow Dissolving, Long-Lasting Protection for Crystal Clear Pool | 100% Trichloro

9.9 Easy installation

9.7 Simple to use

9.5 lasts a long time
Main highlights

🇨🇦 MADE IN CANADA: Pool Supplies Canada is a Canadian company and all our products are proudly MADE IN CANADA! Trust a Canadian brand created for Canadian families 🇨🇦
VERSATILE USE FOR All POOLS: Whether you have a large inground pool or above ground pool, this chlorine pucks for pool works seamlessly with floating dispensers, skimmers, or automatic feeders, offering a hassle-free maintenance experience
UV STABILIZED FOR SUN PROTECTION: Unlike standard chlorine tablets, Pool Supplies Canada pucks are UV stabilized, preventing rapid chlorine loss in sunlight. This saves you money by reducing the need for frequent applications and ensures effective chlorine levels for longer
HIGHLY CONCENTRATED FORMULA: Our premium 100% Trichloro + 90% available king size pucks are formulated for maximum sanitization, reducing the need for constant reapplications. Get stronger disinfection per puck, ensuring your pool remains safe and swim-ready with minimal effort
BULK 6 KG SUPPLY – COST-EFFECTIVE & RELIABLE: 2 x 6kg bucket. Get the best value for your money with our extra large 6 kg size of premium pool pucks. Designed for consistent, worry-free protection, our bulk pack reduces the hassle of frequent store trips, keeping your pool fresh and inviting
LONG-LASTING CHLORINATION FOR A SPARKLING POOL: Keep your pool crystal clear with slow-dissolving, chlorine pucks that provide continuous sanitization. Each 3-inch, 200g puck ensures long-term water purity, preventing bacteria, algae, and cloudy water for a beautiful, crystal clear pool. 100% Trichloro + 90% Available Chlorine Content
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9.8

Exceptional

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03
Pool Supplies Canada

Super Pool Clarifier – 1L Liquid Concentrated Water Clarifier – Eliminates Cloudiness & Enhances Filtration – Keeps Water Sparkling Clear & Reduces Scum Build-Up - Swimming Pool Clarifier Liquid
Main highlights

🇨🇦 MADE IN CANADA: Pool Supplies Canada is a Canadian company and all our products are proudly MADE IN CANADA! Trust a Canadian brand created for Canadian families 🇨🇦
SAFE FOR ALL POOLS & FILTER TYPES: Designed to work with chlorine, bromine, and saltwater pools, this versatile clarifier is completely safe for all filtration systems. Whether you own an above ground pool or inground pool, enjoy worry-free water treatment with no harsh side effects
REDUCES FILTER STRAIN & BOOSTS EFFICIENCY: Tired of clogged, inefficient filters? Pool Supplies Canada pool water clarifier advanced liquid formula binds microscopic particles together, allowing your filtration system to trap contaminants more effectively. It helps extend the life of your filter and reduces the need for constant cleaning
PREVENTS SCUM & MAINTAINS WATER FRESHNESS: Keep your pool walls and waterline free from sticky residue. Regular use of this pool clarifier prevents scum buildup, ensuring your pool stays fresh, inviting, and hassle-free. Ideal for both routine maintenance and emergency cloudy water treatment
INSTANTLY CLEAR CLOUDY WATER: Say goodbye to murky, dull, and hazy water. This powerful pool clarifier liquid clings to tiny particles, making them easier to filter out. Within hours, your pool or hot tub water transforms from cloudy to crystal clear, restoring the sparkling blue clarity you love
EFFORTLESS TO USE – JUST POUR & ENJOY: No complicated dosing or multiple treatments needed. Simply add the recommended amount to your pool or spa and let your filtration system do the rest. Enjoy clearer, fresher, and more inviting water without extra effort or expensive treatments
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9.5

Excellent

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04
Pool Supplies Canada

Multi Pool Shock Treatment (Pack of 6 | 450g Each) Fast-Acting 6-in-1 Granular Chlorine Shock + Clarifier, Buffer, Stabilizer, Softener, Stain Remover - for A Crystal Clear Swimming Pool
Main highlights

🇨🇦 MADE IN CANADA: Pool Supplies Canada is a Canadian company and all our products are proudly MADE IN CANADA! Trust a Canadian brand created for Canadian families 🇨🇦
POWERFUL 6-IN-1 FORMULA: Tired of juggling multiple pool chemicals? Pool Supplies Canada Multi-Shock simplifies maintenance with a 6-in-1 formula that works as a Clarifier, Buffer, Stabilizer, Softener, Stain & Scale Inhibitor, and Shock. Achieve sparkling clean, balanced water with one powerful treatment instead of buying multiple products
PERFECT FOR WEEKLY MAINTENANCE & POOL OPENINGS: Designed for easy, consistent pool care, Multi pool shock packets are ideal for weekly treatments and seasonal openings. Whether you're getting your pool ready for Summer or maintaining it through heavy use, this versatile shock treatment keeps water pristine and safe for swimming
KEEPS WATER SAFE & BALANCED: Many shock treatments disrupt pH, leading to constant adjustments. Our chlorine shock is pH-neutral, preventing water imbalance while eliminating harmful contaminants. Maintain a stable, healthy pool environment without worrying about eye irritation, itchy skin, or chemical fluctuations
HIGH CHLORINE CONTENT FOR MAXIMUM EFFECTIVENESS: With 35% available chlorine, this professional-grade pool shock treatment effectively kills bacteria, algae, and organic matter without leaving residue. Enjoy crystal-clear water that stays fresher for longer, reducing the need for frequent treatments
FAST-ACTING & EASY TO USE: No more waiting hours for results! This fast-dissolving granular pool shock quickly oxidizes contaminants, eliminates bacteria, and restores water clarity within minutes. Simply add the recommended amount, and let it do the work—no complicated processes or extra steps. Just clear, safe water, hassle-free
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9.3

Excellent

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05
BioGuard

BioGuard Polysheen Blue (946 mL) Highly Concentrated Water Clarifier (SKU 4863)

Free Shipping

9.9 Simple to use

9.3 worth the money
Main highlights

No pre-dissolving or vacuuming required after use
Highly concentrated and does not affect pH
Great for problem solving and maintaining a crystal-clear pool
Elongates the lives of your filters
Contains clarifiers and polymers that catch unfilterable microparticles that cause cloudy water
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9.2

Excellent

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06
EASYTEST

EASYTEST 7-Way Pool Test Strips, 150 Strips Water Chemical Testing for Hot tub and Spa, Accurate Test Bromine, Total Alkalinity, pH, Free Chlorine, Total Hardness, Cyanuric Acid, and Total Chlorine

Free Shipping

8.7 Simple to use

8.0 clearly written

8.0 Precision
Main highlights

TIPS FOR ACCURATE RESULTS: Keep wet fingers away from the strips. Read under natural daylight for best results.Store in a cool dry place.The expiration is 2 years from manufacture. Once opened, use up in 90 days.
HIGH ACCURACY POOL TESTING STRIPS: High-quality fiber paper and no-bleeding pads selected after repeated trials by R&D personnel. No need to shake off excess water and follow the instructions easily, you will to get the accurate results.
AFFORDABLE 150 STRIPS: This water chemical testing kit contains 150 test strips. Enough balanced for your swimming pool, hot tub, spa and other water testing. At least testing twice a week is recommended to keep your pool sparkling clean and safe
ACCURATE AND FAST TESTING: Just soak in water for 1 seconds; Then take it out,no need to shake excess water off and hold the test strip horizontally for 15 seconds; Compare with the color chart on the bottle to obtain clear and accurate water quality results.
7 IN 1 POOL TEST KIT: Test all necessary parameters for your swimming pool at 1 time, such as Bromine, Total Alkalinity, pH, Free Chlorine, Total Hardness, Cyanuric Acid, and Total Chlorine. Monitor the water quality at any time you want.
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9.1

Excellent

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07
Canada Pool Warehouse

HTH Super Extra 75% CHLORINATING GRANULES Shock Treatment, Pool Water Treatment, 454 g (5)
Main highlights

VERSATILE USE: Compatible with all pool types and effective for routine maintenance or problem-solving treatments
QUICK ACTION: Fast-dissolving formula works rapidly to sanitize and clarify cloudy pool water for immediate results
NOT RETURNABLE: non refundable product. Final sale
CONVENIENT FORMAT: Pre-measured 454g sock-it treatment pack eliminates measuring and provides precise dosing every time
COMPLETE SOLUTION: Four-in-one formula helps sanitize, prevent algae, clarify water, and maintain proper chemical balance
75% SHOCK TREATMENT: Powerful pool water shock treatment designed to quickly eliminate algae and restore crystal clear water in swimming pools
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9.0

Excellent

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08
BioGuard

BioGuard Lo N’ Slo (4.5 kg) to Lower pH (SKU 4104)

19% Off Free Shipping
Main highlights

Prevents staining and scaling of pool equipment and liner deterioration
Prevents cloudy water as a result of high pH
More safe than muriatic acid
Increases swimmer comfort
Increases chemical efficacy
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8.7

Very Good

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09
BioGuard

BioGuard Balance Pak 200 (3.25kg) to Raise pH (SKU 4523)
Main highlights

Used to raise pH once adjusted total alkalinity is within range
Used after rain, and when pH drops
Prevents corrosion and metals problems
Increases the life of the liner by preventing wrinkling and other damages inflicted by low pH
Increases swimmer comfort by preventing skin rashes, eye irritation and other symptoms of low pH
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8.6

Very Good

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10
Aqua Coastal

Algae Shield Liquid Pool Algaecide (50% Strength) (Copper and Stain Free) (1L)

9.7 worth the money

9.7 Simple to use
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
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8.5

Good

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