Search  for anything...

In The Swim 3 Inch Stabilized Chlorine Tablets for Sanitizing Swimming Pools - Individually Wrapped, Slow Dissolving - 90% Available Chlorine - Tri-Chlor - 10 Pounds

  • Based on 21,458 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $11.67 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Jun 22 – Jun 26
Order within 9 hours and 7 minutes
Available payment plans shown during checkout

Style: Chlorine Only


Size: 10 Pound


Features

  • 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

Brand: In The Swim


Item Weight: 10 Pounds


Item Form: Tablet


Product Benefits: Maintains Clean Sanitized Water


Number of Items: 1


Brand: In The Swim


Item Weight: 10 Pounds


Item Form: Tablet


Product Benefits: Maintains Clean Sanitized Water


Number of Items: 1


Unit Count: 160 Ounce


Product Dimensions: 9.9 x 9.4 x 9 inches


Item Weight: 10 pounds


Manufacturer: Allchem


Item model number: C3010


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jun 22 – Jun 26

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • They’re dependable, cost-effective, and make pool upkeep a breeze. Highly recommended!
Style: Chlorine Only Size: 25 Pound
I've been using In The Swim's 3 Inch Stabilized Chlorine Tablets for many seasons now, and they’ve quickly become a staple in my pool maintenance routine. These tablets are effective, easy to use, and provide consistent sanitation without the hassle of daily monitoring. Pros: Long-Lasting Formula: Each tablet dissolves slowly and steadily, which keeps the chlorine levels in my pool stable for days. I only need to check and refill the floater or chlorinator once or twice a week. Stabilized for UV Protection: Because they’re stabilized, they hold up well under the sun without burning off too quickly, which saves me both time and money on frequent dosing. Clean and Convenient Packaging: The tablets come individually wrapped and in a sturdy bucket that’s easy to seal and store. Reliable Sanitization: I’ve had zero issues with algae or cloudy water since switching to these tablets. They really keep the water crystal clear and safe. Cons: Strong Odor: As expected with chlorine, the smell is strong when opening the bucket—so make sure you’re in a well-ventilated area. Not Ideal for Smaller Pools: These 3-inch tablets may be too much for very small pools or spas unless you break them up, which can be messy. Final Verdict: If you own a medium to large-size pool and want an efficient, low-maintenance chlorine solution, In The Swim's 3-inch tablets are a fantastic choice. They’re dependable, cost-effective, and make pool upkeep a breeze. Highly recommended! ... show more
Reviewed in the United States on May 5, 2025 by Michael F

  • Very pleased with product.
Style: Chlorine Only Size: 10 Pound
Wow really amazed, how long a tablet has lasted. I put 1 tablet in skimmer on Wednesday night, it is Saturday morning and still have a piece a little bigger than an inch. And water is much clearer. It was getting cloudy prior to adding tablet. The top is a little tricky to open at first, but once open once it isn't a problem. Love that the lid locks back, instead of just clicking back on. Really like that each tablet is individually wrapped. Functions as described, clears water and easy to handle tablets with being individually wrapped. Definitely recommend, will purchase again. ... show more
Reviewed in the United States on May 31, 2025 by Pam

  • Chlorine Pool Tablets work well
Style: Chlorine Only Size: 50 Pound
Arrived in a timely manner and was just as we had expected. We did not experience any broken tablets that some of the other reviews mentioned. Very satisfied with our purchase and sale price found on Amazon.
Reviewed in the United States on May 27, 2025 by T. Brown

  • Works well
Style: Chlorine Only Size: 50 Pound
Could be easier to work with, the packaging is a little cumbersome but it is easy enough to use and comes in a giant bucket.
Reviewed in the United States on May 29, 2025 by buyerofthings

  • pool chloronating tablets
Style: Chlorine Only Size: 25 Pound
This is a great product.It was a good price.That's why we purchased it , but these tablets seem to work great and help keeping my pool clean.
Reviewed in the United States on June 1, 2025 by Meredith

  • Very effective.
Style: Chlorine Only Size: 50 Pound
Been using these tablets for many years now. Very effective. I consume approximately one per day for my 25k gallon pool.
Reviewed in the United States on June 5, 2025 by Kev

  • The best
Style: Chlorine Only Size: 50 Pound
They seem to balance my pool correctly with a floater full of the tabs…
Reviewed in the United States on June 6, 2025 by garrett foster

  • The pills are real good
Style: Chlorine + Opening Kit Size: 25 Pound
What a deal real satisfying with the product and came two days early 10/10
Reviewed in the United States on June 5, 2025 by Jennifer

Can't find a product?

Find it on Amazon first, then paste the link below.