10 Best Trichlor Granules For Pools of 2025

Tested and Reviewed: Top 10 Trichlor Granules For Pools deals with expert ratings from 8.1 to a perfect 10

April 2026 Edition

Editor's Choice

9.7

Save 23%

CLOROX Pool&Spa

CLOROX Pool&Spa All-in-One XtraBlue Chlorinating Granules, Kills Bacteria & Stops Algae, Blue, 6 Pounds

23% Off

Editor's bottom line:

“This trichlor granules for pools is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Dual Action Sanitizer and Shock - Clorox Pool&Spa All-in-One XtraBlue Chlorinating Granules can be used to sanitize and shock your pool water clean and clear. Cleans and clears water in one step.
Quick-Dissolving, Fast-Acting: These quick-dissolving, fast-acting chlorine granules not only kill bacteria but are also stabilized to protect against loss from sunlight, ensuring your sanitizer residual lasts longer in your pool water.
For Clean, Algae-Free Water. Kill bacteria and stop green, mustard and black pool algae with All-in-One XtraBlue Chlorinating Granules. The multi-functional XtraBlue formula kills and prevents all types of pool algae, kills bacteria, and reduces eye irritation and chlorine odor.
Improves Filter Performance: This product destroys contaminants to aid filtration, helping to clear dull water and enhance overall pool clarity. Enjoy a cleaner, more efficient pool filtration system.
Clorox Pool App: Test like an expert anytime, anywhere with the Clorox Pool App. Solve common swimming pool problems and get personalized product and dosage recommendations

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Picked by 397 people today

9.5

Eeziblue

Dichlor Chlorinating Granules - Pool Chlorine Granules for Swimming Pool, Sodium DiChlor Pool Shock, Granular Shock for Pool, Granulated 56% Stabilized Pool Sanitizer for Hot Tub or Spa (2 lbs)

Main Highlights

USE: Granular chlorine is ideal for use in swimming pools, spas, fountains and water features.
BENEFITS: Powerful sanitizing powder that destroys bacteria, breaks down contaminants and kills algae
FEATURES: Calcium-Free formula keeps hard-water pools sparkling clean and crystal clear
ACTIVE INGREDIENTS: Premium-quality 56% Sodium Dichloro-s-Triazinetrione Dihydrate
PREMIUM: Quick dissolving, EPA approved formula, helps control algae growth, maintains water clean, clear, and sanitized EPA. Reg. No 3525-107-102852

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9.5

Save 26%

POOL SHARK

68% Calcium Hypochlorite Pool Shock for Swimming Pools - Chlorine Granules Swimming Pool Shock 50 lbs Bucket - Pool Chlorine for Inground and Above Ground Pool Treatment, Saltwater (50lbs)

26% Off

Main Highlights

EASY SHOCK TREATMENT FOR FAST RESULTS - After a busy weekend of swimming, your pool needs a quick refresh. Pool Shark fast-dissolving granules make shock pool treatments easy. Just measure it out, toss it in, and watch your water turn from cloudy to crystal-clear in 24 to 48 hours.
POWERFUL CALCIUM HYPOCHLORITE FORMULA Contains 68% active chlorine from Calcium Hypochlorite. This high-strength pool shock kills algae, bacteria, and fungi fast, keeping your pool water safe and clean for swimmers.
IDEAL FOR INGROUND & ABOVE GROUND POOLS Perfect for inground pool shock treatments or above ground pools, as well as saltwater systems, spas, and hot tubs. Designed for universal pool compatibility and reliable results every time.
PROFESSIONAL-GRADE POOL CHLORINE Each 1 lb pool shock bag treats up to 10,000 gallons of water. Great for weekly maintenance or as a liquid pool shock alternative when you need quick chlorine replenishment.
CLEAR WATER YOU CAN TRUST Maintain crystal-clear pool water effortlessly. Pool Sharks chlorine shock controls odor, boosts alkalinity, and restores clarityideal for any pool owner who values effective, easy-to-use pool chemicals.

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9.2

CLEARVIEW

ClearView Chlorine Granules 5 Lbs for Spas and Hot Tubs, Fast Dissolving Chlorinating Granules for Swimming Pools, Calcium-Free Formula Pool Chlorine Shock Granular Sanitizer

Main Highlights

Ultra-Pure & Powerful Formula: Experience superior sanitation with our granules, composed of 99% Sodium Dichloro-S-Triazinetrione Dihydrate. This high-purity, stabilized chlorine ensures maximum bacteria and algae-killing power for a consistently clean and healthy pool.
Fast-Dissolving & Efficient: These fast-acting granules dissolve quickly and completely in water, delivering immediate sanitizing action without leaving behind gritty residue. Get your pool from cloudy to crystal clear with rapid, effective treatment.
Stabilized for Sun Protection: The stabilized chlorine formula is enhanced to resist degradation from sunlight, allowing it to work longer and more effectively. This means you use less product over time while maintaining optimal free chlorine levels all day.
Dual-Action for Sanitation & Shock: Ideal for both routine maintenance and shock treatments. Effectively sanitizes your pool weekly and serves as a powerful oxidizing agent to break down contaminants, eliminate chloramines (that chlorine odor), and restore sparkle after heavy use or storms.
Gentle on Pool & Equipment: When used as directed, our high-purity granules are gentle on pool liners, filters, and equipment. They help prevent scale buildup and corrosion, protecting your investment and making pool care simpler and more cost-effective.

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9.0

Save 26%

In The Swim

In The Swim 3 Inch Stabilized Chlorine Tablets for Sanitizing Swimming Pools - Individually Wrapped, Slow Dissolving - 90% Available Chlorine - Tri-Chlor - 50 Pounds

26% Off

Main Highlights

Cleaner, Safer Water: Our chlorine tablets remove bacteria, algae, and other organic contaminants to ensure your above ground or inground swimming pool stays clean and clear throughout the entire season
Powerful Sanitization: 99% Trichloro-S-Triazinetrione with 90% stabilized chlorine. Tablets do not expire and are non-perishable, but best used within 2 years of manufacture.
Long-Lasting Protection: Slow-dissolving to ensure consistent chlorination. Perfect for use in floaters or automatic feeders
UV Protected: Sun-stabilized to resist depletion from harmful UV rays
Usage: Ideal size for floaters or automatic feeders

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Best Value

8.8

Save 34%

In The Swim

In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 25 Pounds

34% Off

Main Highlights

Fast-Acting Algae Control: Calcium Hypochlorite (Cal-Hypo) is an effective non-stabilized chlorine shock treatment, ideal for routine maintenance in your swimming pool
Versatile Use: Suitable for above ground or in-ground swimming pools, spas, and hot tubs; Pre-dissolve or dilute to avoid bleaching the liner
High Chlorine Content: 65% available chlorine, provides powerful sanitization for crystal-clear water
Easy Application: Pre-dissolve or dilute to avoid bleaching swimming pool liners; Spread granules in the deepest part of the pool; Brush if needed
Dosage: Use 1 Pound per 10,000 gallons weekly to maintain 5-10 ppm chlorine levels

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8.6

Save 30%

POOL SHARK

Pool Shark Swimming Pool Chlorine Tablets - 3-Inch Chlorine Tablets - Slow-Dissolving 90% Active Chlorine Tabs - Pool Chemicals for Inground Pools, Above Ground Pools, Saltwater, Spa, Hot Tub (50 lbs)

30% Off

Main Highlights

SLOW-RELEASE CHLORINE FOR REGULAR MAINTENANCE - Tired of constantly checking your pool's chlorine levels? With our slow-dissolving 3-inch chlorine tablets, any pool will quickly benefit from the steady release over several days. Spend more time enjoying your pool, not maintaining it.
90% ACTIVE CHLORINE FROM 99% TRI-CHLOR - You want pool water that's crystal-clear, smells fresh, and is safe to swim in. Our 99% trichloro-s-triazinetrione 3" chlorine tablets for pool break down 100% of unhealthy things and contaminants that cause cloudiness.
SET IT AND FORGET IT POOL CARE - These pool tablets are extremely easy to use. Nothing complicated. No extra steps. Just add a chlorine tablet in a floater dispenser, skimmer, or automatic chlorinator and sit back and relax while it does all the hard work of sanitizing for you.
COMPATIBLE WITH ALL POOL TYPES - Whether youve got a vinyl-lined above ground pool, an inground saltwater system, or something in between, Pool Shark 3" pool chlorine tablets work to effectively clean and sanitize all pool types and sizes including large residential and community pools.
KEEP CHLORINE LEVELS STEADY BETWEEN SHOCKS - Want to keep your water protected between shock treatments? These tablets provide ongoing sanitization to keep your pool swim-ready and clear of contaminants between deep cleans. Pair with our Pool Shark Chlorine Granules for weekly shock treatments.
50 lbs chlorine tablets in total you get.

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8.3

CLEARVIEW

ClearView Chlorine Granules 10 Lbs for Swimming Pools, Calcium-Free Formula Quick Dissolving Spa Chlorinating Granules, Hot Tub Pool Chock Chlorine Granular Sanitizer

Main Highlights

Keep your pool water crystal clear and hygienic with ClearView Chlorine Granules. Our fast-dissolving formula effectively kills bacteria, algae, and other harmful microorganisms, ensuring a safe and refreshing swimming experience for you and your family.
Combat tough algae blooms and organic contaminants with the powerful, stabilized chlorine action of Granules. Ideal for routine shocking and weekly sanitation, it provides long-lasting protection even under intense sunlight, keeping your pool balanced and ready to swim.
Calcium-free formula chlorine granular. Say goodbye to cloudy water and stubborn calcium stains! Our advanced Calcium-Free technology keeps your hard-water pool a crystal-clear oasis. It prevents scaling on tiles and equipment, guaranteeing spotless clarity and luxuriously soft water all year long.
More than just for pools! The Chlorine Granules are a versatile disinfectant perfect for spas, hot tubs, and general outdoor cleaning tasks. Effectively sanitize water features, patio furniture, and garbage areas (always follow dilution instructions for specific uses).
Trusted by pool owners for reliable, consistent results. ClearView Chlorine Granules deliver the professional-grade sanitation you need without complications. Depend on them week after week for predictably pristine, inviting, and sanitized pool water. We have 2 type labels, both are our products.

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8.1

Pool Mate

Pool Mate 4-Pounds Premium Pool Chlorine Granules, Concentrated Chlorinating Granules, Made in USA

Main Highlights

Broadcast 3 ounces of this product per 10,000 gallons pool water every other day or as often as needed to maintain chlorine residual at 2-4 ppm
Stabilized, concentrated chlorinating granules
Customers prefer chlorinating granules because it has little to no effect on pH levels
Can be used as a routine chlorine sanitizer or as a shock treatment
Powerful, super-concentrated, residue-free, and fast-dissolving

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8.1

CLEARVIEW

ClearView Chlorine Granules 2.2 Lbs for Swimming Pools, Pool Chlorine Shock Granular Sanitizer for Spas, Fast Dissolving Chlorinating Granules for Hot Tubs

Main Highlights

CLEARVIEW CHLORINE GRANULES: 99% Sodium Dichloro-S-Triazinetrione Dihydrate active ingredients, use as bactericide, algaecide & disinfectant in swimming pools hot tubs and spas.
FAST-ACTING QUICK-DISSOLVING: The chlorine granular dissolves quickly according to instruction can help us get the best quick water treatment maintenance.
BENEFITS & FEATURES: Powerful sanitizing powder that destroys bacteria, breaks down contaminants and kills algae, maintains water clean, clear, and sanitized.
CALCIUM-FREE FORMULA: Calcium-Free formula keeps hard-water pools sparkling clean and crystal clear, the water will not be hard even long-term use.
COMPATIBLE WITH ALL POOLS: Our ClearView chlorine granules are perfect for multiple scenarios, great for all pool types including vinyl-lined pools and saltwater systems. We have 2 type labels, both are our products.

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Our Best Overall Choice

Best Choice

9.7

CLOROX Pool&Spa

CLOROX Pool&Spa All-in-One XtraBlue Chlorinating Granules, Kills Bacteria & Stops Algae, Blue, 6 Pounds

23% Off

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Dual Action Sanitizer and Shock - Clorox Pool&Spa All-in-One XtraBlue Chlorinating Granules can be used to sanitize and shock your pool water clean and clear. Cleans and clears water in one step.
Quick-Dissolving, Fast-Acting: These quick-dissolving, fast-acting chlorine granules not only kill bacteria but are also stabilized to protect against loss from sunlight, ensuring your sanitizer residual lasts longer in your pool water.
For Clean, Algae-Free Water. Kill bacteria and stop green, mustard and black pool algae with All-in-One XtraBlue Chlorinating Granules. The multi-functional XtraBlue formula kills and prevents all types of pool algae, kills bacteria, and reduces eye irritation and chlorine odor.
Improves Filter Performance: This product destroys contaminants to aid filtration, helping to clear dull water and enhance overall pool clarity. Enjoy a cleaner, more efficient pool filtration system.
Clorox Pool App: Test like an expert anytime, anywhere with the Clorox Pool App. Solve common swimming pool problems and get personalized product and dosage recommendations

Show Price

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