NEXT DAY DELIVERY
POOL SUPPLIES FAST
  Change

FREE SHIPPINGon orders $50+

Doheny's 3 in Chlorine Tabs, 100 lb

Sale
$154.99
$229.99

$3.09/lb

check

Sale
$154.99
$229.99

$3.09/lb

In stock

Brand
Doheny's
MPN
DCC100
SKU
4824Q2

Item 4825P

Product Options:

Sale
$154.99
$229.99
loader
Loading...
Pool Supplies Fast Pool Supplies Fast Next Day Delivery
Next Day Delivery Next Day Delivery info
This item will arrive on the next business day for orders placed by 3:00 PM with the exception of 2:30 PM for the Texas warehouse.
Ground Delivery Ground
Your current location is outside the Next Day Delivery area. This item ships FedEx Ground and usually arrives in 2 to 3 business days.
2-Day Delivery 2-Day Delivery info
This item will arrive in two business days for orders placed by with the exception of for the Texas warehouse.
Ground Delivery Ground Delivery info
Your package will ship via FedEx Ground service and ships same day or within 24 hours
2-Day Delivery 2-Day Delivery info
This item will arrive in two business days for orders placed by with the exception of for the Texas warehouse.
Ground Delivery Ground Delivery info
This item ships via FedEx Ground. Ships within 24 hours.
2-Day Delivery 2-Day Delivery info
This item will arrive in two business days for orders placed by with the exception of for the Texas warehouse.
Ground Delivery Ground Delivery info
This item ships via FedEx Ground. Ships within 24 hours.
2-Day Delivery 2-Day Delivery info
This item will arrive in two business days for orders placed by with the exception of for the Texas warehouse.
Ground Delivery Ground Delivery info
This item ships via FedEx Ground. Ships within 24 hours.
2-Day Delivery 2-Day Delivery info
This item will arrive in two business days for orders placed by with the exception of for the Texas warehouse.
Ground Delivery Ground Delivery info
This item ships via FedEx Ground. Ships within 24 hours.
2-Day Delivery 2-Day Delivery info
This item will arrive in two business days for orders placed by with the exception of for the Texas warehouse.
Ground Delivery Ground Delivery info
Your package will ship via FedEx Ground service and ships same day or within 24 hours
2-Day Delivery 2-Day Delivery info
This item will arrive in two business days for orders placed by with the exception of for the Texas warehouse.
Ground Delivery Ground Delivery info
Your package will ship via FedEx Ground service and ships same day or within 24 hours
2-Day Delivery 2-Day Delivery info
This item will arrive in two business days for orders placed by with the exception of for the Texas warehouse.
Ground Delivery Ground Delivery info
Your package will ship via FedEx Ground service and ships same day or within 24 hours
Product Overview
  • Ships as (2) locked, easy-open, 50lb buckets of Chlorine Tablets.
  • Long-Lasting Chlorine Tabs: Pre-stabilized against UV rays to prevent chlorine burn-off for extended effectiveness.
  • Pro-grade Ingredients: Made from 99% pure Trichloro-S-Triazinetrione with 90% available chlorine for superior sanitation.
  • Family-Safe Design: Each bucket features a childproof locking lid, and individually wrapped 3-inch tablets minimize odor, dust, and skin contact.
  • Easy Application: Simply place in a pool skimmer, floater, or feeder for hassle-free chlorine distribution.
  • Trusted Quality: With over 50 years of expertise, Doheny’s delivers premium-grade 3-inch chlorine tablets, produced in the USA, for crystal-clear pool water.

Product Description

For over 50 years, Doheny’s has been a trusted name in the pool supply industry, delivering top-quality products that keep pools clean, safe, and enjoyable. Our Pro-Grade Chlorine Tablets offer hassle-free pool sanitation, ensuring crystal-clear water without the guesswork.

Engineered with a highly compressed, dense formula, these tablets dissolve slowly, releasing chlorine at a controlled rate for longer-lasting effectiveness. Unlike other tablets that dissolve too quickly—wasting chlorine and requiring frequent dosing—Doheny’s chlorine tabs maximize efficiency while keeping your water balanced.

Each tablet is pre-stabilized against harmful UV rays, preventing premature chlorine burn-off and ensuring consistent disinfection. This means you get more use out of each tablet, reducing the need for frequent replacements and saving you money. Plus, our individually wrapped design minimizes odor, dust, and skin contact, making handling safer and easier.

Designed for all pool types—including chlorine pools, saltwater pools, and spas—Doheny’s slow-dissolving chlorine tablets provide reliable protection against algae, bacteria, and contaminants. Experience superior pool care with Doheny’s—trusted by pool owners for over half a century.

  • ✔ Slow-dissolving, long-lasting formula for continuous pool sanitation
  • ✔ UV-stabilized to prevent chlorine loss from sunlight
  • ✔ Individually wrapped for easy handling and reduced waste
  • ✔ Compatible with all pool types, including chlorine and saltwater systems
  • ✔ 50+ years of trusted quality in the pool supply industry

Fast Acting & Slow Dissolving - Doheny's 8 oz tablets are highly compressed to reduce the dissolve rate and prolong shelf life without containing filler or binders like other tablets.

Strong 99% Active Ingredient - Chlorine Tablets consist of 99% pure Trichloro-S-Trianzinetrione and 1% other ingredients meaning Doheny's tablets have 90% available chlorine for maximum effectiveness.

Simple To Use - No measuring, guesswork, or mess! Simply add the tablets to your floating chlorinator or automatic feeder and ENJOY YOUR POOL!

Individually Wrapped - Each of of the chlorine tablets are individually wrapped for odor reduction and ease of handling.

Child-Resistant Packaging - These convenient tablets come in a container with a child-proof locking lid for safety.

UV Resistant & Stabilized - Chlorine tablets are stabilized against the sun's UV rays to prevent chlorine burn-off.

Compare Products

Specifications

DIRECTIONS FOR USE:

For Swimming Pool Disinfectant: When used as directed, this product is effective as a swimming pool water disinfectant. The dosage necessary for your pool will change considerably depending on those factors that burden the disinfection system. Some of the factors that will vary the required dosages are water temperature, bather load, exposure to windblown debris, thunder or rainstorms and length of filtration cycle. Ensure all pool equipment is working properly. Backwash the filter system following manufacturer's directions. Adjust pH to between 7.2-7.6. Add stabilizer to establish a minimum level of 30-40 to reduce degradative effects of sunlight upon the chlorine residual. Check for metals. Before using this product add stain and scale inhibitor to prevent staining of pool surface due to metals. When using other products as outlined in the directions for this product, always follow directions on those products.


For Start up of Newly Filled Pools: Before using this product, make sure that the filtration system is clean and operating properly. Adjust the pH of the water to the range of 7.2-7.6 using suitable products and a reliable test kit. Adjust the alkalinity of the water to a minimum of 125 ppm (mg/L), based on the test kit reading. To initially achieve 1-3 ppm available chlorine, add 1.25 oz. product per 1,000 gallons of water. Add 1/4 oz. product per 1,000 gallons of water daily or as needed to maintain that level. With pump running, place one (1) 3" tab per 10,000 gallons pool water every week into a suitable feeder or directly into a stick skimmer basket. Repeat additions until a residual of 1-3 ppm chlorine is established as determined using a test kit. Regular use of a test kit is necessary to determine when it is necessary to add another dose of this product to maintain a residual of 1-3 ppm available chlorine in the pool water. After use of this product it is recommended that a preventative algae treatment be added on a weekly basis.


For Superchlorination: The pool water should be superchlorinated or shocked every seven days or whenever the combined chlorine level is above 0.5 ppm (mg/L). Combined chlorine is the difference between total and free chlorine, as measured by a suitable test kit. Add a sufficient amount of an appropriate shock product directly to the surface of circulating water to raise the available chlorine level to 5-6 ppm (mg/L), based on test kit readings. lf the combined chlorine reading is not below 0.5 ppm (mg/L) repeat the shock treatment described above. For example, the addition of 10 ounces of sodium dichloro-s-triazinetrione per 10,000 gallons of water (75 grams per l,000 liters) will provide approximately 5 ppm (mg/L) of available chlorine. lf the combined chlorine reading is not below 0.5 ppm (mg/L) and the water has not been restored to its normal clarity, repeat the shock treatment described above.

NOTE: Reentry into treated swimming pools is prohibited above levels of 3 ppm of Chlorine due to risk of bodily injury.


How to Determine Pool Capacity in U.S. Gallons

Use the Appropriate Formula Below

Rectangular or Square: Length x Width x Average Depth x 7.5 = Total Gallons

Round: Diameter x Diameter x Average Depth x 5.9 = Total Gallons

Oval: Maximum Length x Maximum Width x Average Depth x 6.7 = Total Gallons


Storage and Disposal

Pesticide Storage: Do not contaminate water, food or feed by storage or disposal. Store in a dry, cool and well ventilated area. Avoid moisture getting into container. Keep off wet floors. ln case of spillage, wash with large amounts of water. After each use, keep container tightly closed. Oxidizing material. Keep away from flames, sparks and all sources of heat. Avoid contact with organic material.

Pesticide Disposal: Pesticide wastes are acutely hazardous. lmproper disposal of excess pesticide, spray mixture or rinsate is a violation of Federal Law. lf these wastes cannot be disposed of according to label instructions, contact your State Pesticide or Environmental Control Agency, or the Hazardous Waste representative at the nearest EPA Regional office for guidance.

Container Handling: Nonrefillable container. Do not reuse or refill this container. Offer for recycling, if available. Triple rinse container (or equivalent) promptly after emptying.

Emergency Handling: ln case of contamination or decomposition do not reseal container. lf possible, isolate container in open well-ventilated area. Flood with large volumes of water. Dispose of contaminated material in an approved landfill area.

Spills: When handling or dealing with spills, use impact-resistant goggles with side-shields, or face shield; body-covering clothes, including impervious rubber or plastic gloves and boots; use a dust respirator if dusting occurs. Sweep up dry spills and dispose of as described for pesticide disposal. lf drum contents are contaminated or decomposing, do not reseal container; isolated sealed drum in the open or in well-ventilated area; flood with large volumes of water if necessary

Help

Frequently Asked Questions

How do I use 3-inch chlorine tabs in my pool?

3-inch chlorine tabs are typically placed in a floating dispenser (chlorinator), a skimmer basket, or an automatic inline/offline chlorinator. Do not place them directly on the pool surface or in the skimmer if your pool has a vinyl liner, as they can bleach or damage the liner. Do not put tabs in a skimmer basket if your pool has a heater as this can damage the heat exchanger.

How many chlorine tabs should I use for my pool size?

The number of tabs depends on your pool's volume, bather load, sunlight exposure, and current chlorine demand. Generally, one 3-inch tab treats about 5,000 to 10,000 gallons of water for a week. Always refer to the product label for precise dosing instructions based on your pool's size and desired chlorine levels.

How often should I add chlorine tabs to my pool?

Chlorine tabs dissolve slowly, releasing chlorine over several days. You should check your chlorine levels daily and replenish the tabs as needed, typically once every 5-7 days, to maintain a free chlorine residual of 1-3 ppm.

Can I put chlorine tabs directly into my pool skimmer?

While convenient, placing chlorine tabs directly in the skimmer can lead to highly chlorinated water sitting in your plumbing lines when the pump is off, which can corrode equipment over time. It's generally safer for equipment to use a floating dispenser or an automatic chlorinator. Avoid placing them in the skimmer for vinyl liner pools due to bleaching risk.

Why are my chlorine tabs dissolving too fast or too slow?

Too Fast: High water temperature, high bather load, heavy rainfall, or poor water balance (especially low cyanuric acid) can cause tabs to dissolve quickly.

Too Slow: Low water temperature, insufficient water circulation, or very high cyanuric acid levels can slow down dissolution.

From The Manufacturer

Reviews

Q & A

Doheny's is #1 in Quality, Price & Service

Two chat bubbles

Service is our passion.

Family owned since 1967, your satisfaction is our #1 priority. That's why we're America's leading pool supply.
Shipping truck

Fast & free shipping.

We have thousands of items eligible for next day shipping! Shipping is free if you spend over $50.
Checkmark

Spend less. Get more.

We offer only top quality products and we sell them for less-guaranteed. That's our Lowest Price Promise.
loader
Loading...