Best Granular Swimming Pool Chlorine in 2026

Keeping your swimming pool water clean and sanitary is one of the most important steps for pool maintenance. Let In The Swim’s 3 inch chlorine tablets for pools help. With a powerful active ingredient and slow dissolving formula, our chlorine tablets will keep your swimming pool water sanitary longer, saving you time and money.

Chlorine tablets contain 99% Trichloro-S-Triazinetrione (Trichlor) and 90% available chlorine, making it one of the strongest products on the market. Each 3 inch chlorine tablet is sun-stabilized which increases longevity in outdoor swimming pools.

Pool chlorine tablets help you avoid inconsistent chlorination, which is a common occurrence when using granular or liquid chlorine to sanitize a pool. Keeping your pH and alkalinity levels balanced helps with the effectiveness of pool chlorine in the water.

Unsinkable Reliability – Keep your pool clean and pristine with your pool chlorine float from Cclear Pool! Your chlorine tablet holder won’t sink thanks to its foam filling and heavy-duty materials.

Safe to Splash – Chlorine stains at the bottom of your pool? Not with your Cclear Pool chlorine dispenser. Ensure chlorine tablets never fall out thanks to a secure, twist-lock cap.

Durable Design – Enjoy your pool chlorinator season after season. Unlike other chlorinators, your chlorine tablet dispenser features 40% thicker, UV-resistant walls that withstand wear and tear.

Helps chlorine last longer

Reduces sun's impact on chlorine

Perfect for salt pools, new pools and pools that use liquid chlorine

BENEFITS: Stay all clear for cannonballs; This fast-dissolving, convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity

FEATURES: Multi-functional shock treatment for weekly use to solve 90% of pool water problems within 24 hours and restore crystal clarity

VISIBLY BRILLIANT SPARKLE: This Cal Hypo based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock

Low-chlorine spa sanitizing cartridge maintains a consistent 0.5 � 1.0 ppm free chlorine level at all times

Shock only once a month and use up to 75% less chlorine

Floats in spa water and flips over when empty, indicating the SmartChlor cartridge needs replacing

24 bags (1-pound each)

Fast-Acting Quick-Dissolving Swimming Pool Sanitizer

Kills bacteria, controls algae, and destroys organic contaminants in pools

Long-Lasting Chlorine Tabs: Each tab is pre-stabilized against the sun's UV rays to prevent premature chlorine burn-off, making them last longer

Active Ingredients: Our pool tablets are pro-grade made from 99% Trichloro-S-Triazinetrione and 90% stabilized chlorine

Safe for the Family: Each 50lb bucket has a childproof locking lid for safety. Each 3 inch chlorine tablet for your pool comes individually wrapped to minimize odor, dust and skin contact

Product Does Not Cloud Pool

Ready To Use, No Mixing Required - Great Choice for Pool Closings

Perfect For Pressure Washing, Sanitation & Other Related Uses

Protects against algae and bacteria for water that stays clean, clear and free of visible algae

Kills all types of pool algae and kills bacteria

Protected against sunlight to last longer

BENEFIT: Protect your swimming pool and enjoy clean, clear water with these easy-to-use chlorine-based tabs; Kills algae and bacteria

CLEAN, CLEAR WATER: HTH Chlorine Tabs keep water clear while protecting against bacteria, algae and other organisms

SLOW DISSOLVING, LONG LASTING: Sun protected for longer chlorine life, HTH Chlorine Tabs dissolve slowly and last up to one week

Stabilized to protect against harmful UV rays

Improves the chlorine residual in your pool

Individually wrapped for easy and safe handling

New formula with 3 active Ingredients

Eliminates all types of Pool Algae

Reduces chemical demand

BENEFITS: Sanitize, clarify, and soften the water in your swimming pool so it is always ready for fun

USE: Apply directly to pool water, broadcasting it evenly over a wide area in the deepest part of the pool; Add granules while filter pump is running during the evening; Use clean, dry scoop only used for this product

COMPATIBILITY: Chlorine and saltwater systems

BENEFIT: Sanitizer, clarifier, and algaecide to protect your swimming pool and swimmers with one easy, convenient, and individually wrapped 3-inch tablet

CLEAR BLUE WATER: This advanced formula sanitizes, clarifies, and kills algae for beautiful, clean, and clear water all season

SLOW DISSOLVING, LONG LASTING: Sun protected for longer chlorine life, HTH 3” Individually Wrapped Chlorine Tabs Advanced dissolve slowly and last up to one week

Revolutionary compact design allows for incredibly easy DIY installation.

4th-Generation system, combining the best in advanced technology with reliable, simple operation.

USA Titanium Cell, industry-best 8-Year Limited Warranty.

Premium deluxe heavy-duty large 7" diameter floating chemical dispenser.

This heavy-duty dispenser holds up to 3 lbs. of 3" or 1" chlorine or bromine tablets (tablets not included). The dispenser has a safe and secure locking cap to keep tablets inside.

Includes an adjustable control ring for balanced delivery.

Additional minerals for Pool RX pool unit

Eliminates all types of Pool Algae

Reduces chemical demand

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

Kills bacteria 2 ways with a low level of chlorine and FROG Sanitizing Minerals. Minerals last 4 months, SmartChlor lasts up to 4 weeks depending on hot tub size and use; floats when working, flips when empty, ideal for hot tubs up to 600 gallons

You use up to 75% less chlorine* with FROG @ease, making water easier on skin, hair, swimsuits, and your hot tub’s surfaces. FROG sanitizing minerals kill bacteria, condition the water for softness and absorb acid to help keep pH balanced

3-pack of FROG @ease SmartChlor Cartridge replacements included. SmartChlor is a patented chlorine formula that adds chlorine only when needed for continuous crystal clear water and peace of mind. Say goodbye to constant monitoring and shock treatments

Long-Lasting Chlorine Tabs: Each tab is pre-stabilized against the sun's UV rays to prevent premature chlorine burn-off, making them last longer

Active Ingredients: Our pool tablets are pro-grade made from 99% Trichloro-S-Triazinetrione and 90% stabilized chlorine

Safe for the Family: Each bucket has a childproof locking lid for safety. Each 3 inch chlorine tablet for your pool comes individually wrapped to minimize odor, dust and skin contact

Long-Lasting Chlorine Tabs: Each tab is pre-stabilized against the sun's UV rays to prevent premature chlorine burn-off, making them last longer

Active Ingredients: Our pool tablets are pro-grade made from 99% Trichloro-S-Triazinetrione and 90% stabilized chlorine

Safe for the Family: Each bucket has a childproof locking lid for safety. Each 3 inch chlorine tablet for your pool comes individually wrapped to minimize odor, dust and skin contact