Search  for anything...
HTH

HTH 42052W Pool Care 3" Chlorine Tabs Advanced, Individually Wrapped Tablets - Swimming Pool Sanitizer with Clarifier & Algaecide, Destroys Bacteria & Algae, Delivers Clear Water All Season, 5 lbs

  • Based on 4,340 reviews
Condition: New
Checking for the best price...
$38.50 Why this price?
Memorial Day Sale · 21% off was $48.99

Buy Now, Pay Later

As low as $9 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – 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, Affirm, Afterpay, Apple Pay, and PayTomorrow. 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 Wednesday, May 27
Order within 3 hours and 50 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Style: Advanced Tablets


Size: 5 lbs


Features

  • 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
  • COMPATIBLE WITH ALL POOLS: This product is great for all pool types including vinyl-lined pools and saltwater systems; Use in floater, feeder, or skimmer basket
  • YOURE ALL CLEAR WITH HTH: For best results, use HTH 6-Way Test Strips twice weekly to test and balance your swimming pool water and keep chlorine levels between 1 and 4 ppm

Description

The HTH 3" Individually Wrapped Chlorine Tabs Advanced are a game-changer for pool owners who want to keep their pool water crystal clear and healthy for swimmers. With one easy and convenient tablet, you get a sanitizer, clarifier, and algaecide, protecting your pool and swimmers. This advanced formula is designed to sanitize, clarify, and kill algae for beautiful and clean water all season long. The slow-dissolving, long-lasting formula is sun-protected for longer chlorine life, dissolving slowly and lasting up to one week. These tabs are compatible with all pool types, including vinyl-lined pools and saltwater systems, and can be used in a floater, feeder, or skimmer basket. For best results, use HTH 6-Way Test Strips twice weekly to test and balance your swimming pool water and keep chlorine levels between 1 and 4 ppm. With HTH, you're all clear!

Brand: HTH


Item Weight: 5 Pounds


Item Form: Tablet


Product Benefits: Controls Algae, Kills Bacteria, Maintains Clean Sanitized Water


UPC:


Brand Name: HTH


UPC: 073187900005


Global Trade Identification Number: 05


Item Type Name: Chlorine Tablets


Manufacturer: Innovative Water Care


Unit Count: 1.0 Count


Item Form: Tablet


Product Benefits: Controls Algae, Kills Bacteria, Maintains Clean Sanitized Water


Item Weight: 5 Pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 27

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.

Similar Products

Top Amazon Reviews

    • Great option for winter chlorination when salt systems stop producing chlorine
Style: Advanced Tablets Size: 5 lbs
Review Image by R Carmody
Review Image by R Carmody
I primarily use these chlorine tablets during the winter months when my pool water temperature drops too low for my salt cell to generate chlorine. Once the water gets cold, my salt system stops producing chlorine, so I switch to using these tablets to maintain sanitation through the winter. I typically place one or two tablets in the skimmer basket and allow them to dissolve slowly. They work well for maintaining chlorine levels without needing to constantly add liquid chlorine. One thing I like is that the tablets come individually wrapped, which helps keep moisture out and makes them easy to store between seasons. Since I only use them during the colder months, one bucket lasts me several winter seasons. Pros: • slow dissolving tablets • individually wrapped for easy storage • good backup for saltwater pools in winter Cons: • tablets should be stored in a cool dry place If you have a saltwater pool, these are a great option to keep on hand for winter when the salt system shuts down. ... show more
Reviewed in the United States on March 11, 2026 by R Carmody
    • Good quality
Style: Advanced Tablets Size: 5 lbs
Good quality, good price , works great
Reviewed in the United States on January 9, 2026 by Hernan
    • 3' pool tablets
Style: Advanced Tablets Size: 5 lbs
Pool tablets are amazing for keeping our pool cystal clear.. we buy this every spring... put them in the floater and let them do the job... great value for the money.... easy to use... makes my pool stay pretty all summer long.
Reviewed in the United States on March 15, 2026 by Lisa Meyers
    • Great quality
Style: Advanced Tablets Size: 5 lbs
Work better than some cheaper products. These really do a great job of keeping water clean and at right levels. i bought some off brand ones that just did not work at all. Quality does matter.
Reviewed in the United States on December 23, 2025 by Valerie
    • A good match for my CL200 Chlorinator
Style: Advanced Tablets Size: 5 lbs
These Tabs worked well in my Hayward CL200 Chlorinator. They lasted about a week with the CL200 set at 2, but my Water Test showed slightly under 1.0 PPM. So I've changed the CL200 setting from 2 to 4. If I can get to between 1-4 PPM, with Tabs that last 5 or more days without disintegrating, I'll be happy and do a little fine tuning from there. Sustained 2.0 PPM would be outstanding. In a container of 10 individually wrapped Tabs, 1 was broken. In my humble opinion, I think the broken Tabs are more of a shipper-handling problem than a MFG problem. Perhaps a layer of Bubble Plastic in the Container bottom would help. For now, I am satisfied with the product. ... show more
Reviewed in the United States on May 17, 2025 by LG
    • EXCELLENT PRODUCT!
Style: Advanced Tablets Size: 5 lbs
The media could not be loaded. This is the best product in the market to keep your pool water crystal clear. We have a 15' Intex above ground pool with a sand filter and we don't need to put any effort in keeping the water completely clear. It helps with algae formation and other imbalance of the water. It's the only tablet you need. We have used the Clorox brand and other brands and this one is the best. This is in Puerto Rico where you have hot weather year round and a lot of rain during the months of August through October and we still have no problem with the clarity of our pool water. The only strong smell is while removing the tablet from the container, but once it's in the floater you're unable to smell it. Ph and everything else stays within balance. I have purchased it twice Amazon before and other times at Walmart. For some reason Amazon stopped carrying the product and/or shipping it to Puerto Rico. Walmart in PR stopped carrying it. I was thrilled to find it on Amazon again. Only two tablets were broken and, that's no problem. You can still use them like that in your floater. There's absolutely no leakage from the container. The tablet lasts about a week to a week and a half. Hopefully, I can continue to buy them on Amazon. Shipping was super fast. I highly recommend this product! A++++ ... show more
Reviewed in the United States on August 21, 2025 by Dagmar Leon
    • Value purchase
Style: Advanced Tablets Size: 8 lbs
Competitive pricing
Reviewed in the United States on March 12, 2026 by Amazon Customer
    • Chlorine pods
Style: Advanced Tablets Size: 25 lbs
Perfect pool pods to assist with keeping that pool clean
Reviewed in the United States on January 31, 2026 by Steph

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...