HTH 42049 Pool Care 1" Chlorine Tabs, Swimming Pool Sanitizer with Added Clarifier - Eliminates Bacteria & Algae, Makes Water

4.7 4.7 out of 5 stars | 8,055 ratings

Price: 19

Last update: 01-11-2025


About this item

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
COMPATIBLE WITH ALL POOLS: This product is great for all pool types, including saltwater systems; Use 1" tabs for above ground pools, 3" tabs for inground pools; Use in floater, feeder, or skimmer basket
YOU’RE 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

Product information


Top reviews from the United States

  • jimmy white
    5.0 out of 5 stars Exceeded my expectations better than others I have purchaced
    Reviewed in the United States on November 20, 2023
    HTH 42049 Swimming Pool Care 1" Chlorine Tabs have completely exceeded my expectations when it comes to maintaining my swimming pool water. These chlorine tabs are nothing short of remarkable, and I'm thrilled to share my positive experience.

    What sets these tabs apart is their slow-dissolving formula. Unlike cheaper brands I've tried in the past, these tabs dissolve gradually, providing a consistent and longer-lasting chlorinating effect. This slow-release feature not only ensures that my pool water stays sanitized for an extended period but also minimizes the frequency of application, making it incredibly convenient for pool maintenance.

    The effectiveness of these chlorine tabs is truly impressive. I've noticed a significant improvement in water clarity and overall pool hygiene since I started using the HTH 42049 tabs. They tackle algae and bacteria with efficiency, leaving my pool water crystal clear and inviting.

    The 1.5lb size is perfect for my needs, offering a sufficient quantity to last for an extended period. The packaging is sturdy and resealable, keeping the tabs fresh and ready for use. It's evident that HTH prioritizes quality in both their product and packaging.

    In comparison to cheaper alternatives, the HTH 42049 Swimming Pool Care 1" Chlorine Tabs have proven to be a wise investment. While they may cost a bit more upfront, the slow-dissolving feature and overall effectiveness make them a cost-effective choice in the long run. I appreciate the peace of mind that comes with knowing my pool is well-maintained with a reliable and high-quality product.

    If you're looking for chlorine tabs that dissolve slowly and work more effectively than cheaper brands, HTH 42049 is the way to go. I highly recommend these tabs to fellow pool owners who prioritize the health and clarity of their pool water. Five stars for a product that delivers on its promises!
  • Boymom33
    5.0 out of 5 stars Best Chlorine Tablets!
    Reviewed in the United States on July 9, 2024
    This was my first time purchasing these chlorine tablets and I am very impressed with the quality. These tablets are easy to open, have a little chlorine smell while handling, and take a couple of days to dissolve. These tablets have kept my pool clear the last couple of weeks and I will continue to buy these tablets to use my pool. These tablets are well worth the money and get the job done.
  • Dan
    5.0 out of 5 stars Fits in the filter on my hot tub
    Reviewed in the United States on October 27, 2024
    Small tablets work great in my hot tub easy opening container no broken tablets in the container
  • Kiwi ????
    4.0 out of 5 stars Small but powerful
    Reviewed in the United States on October 3, 2024
    Tablets were super small in size please be aware of were you put or keep them around pets and kids. You get a good few months worth. Price was alright for the quality & quantity. Make sure when opening not to breath in it's a hard chemical and it's hard to breath if it is breathed in. Also keep in mind swimming with out eye goggles or eye protection will hurt and sting the eyes and please don't drink the water. It's chemicals.
  • Kelly O
    5.0 out of 5 stars Must have for spa owners!
    Reviewed in the United States on December 8, 2024
    Works well with my tab dispenser!
  • KWC Indy
    5.0 out of 5 stars Fits toilet cleaning system perfectly + update
    Reviewed in the United States on January 25, 2024
    I bought these HTH tablets to use as more affordable refills for the Fluidmaster Flush-n-Sparkle toilet cleaning system. If you are unfamiliar with this system, I would encourage you to investigate it or others like it. I can confirm that four of these 1" chlorine tablets fit perfectly inside the Flush-n-Sparkle cartridge (if you remove the black foam used as a spacer).

    I just tested my first refilled cartridge with these tablets in the toilet. I can report that the bowl water has more free chlorine than I was getting by refilling with broken fragments of a 3" Clorox toilet cleaning tablet.

    To refill the cartridge, all I do is cut a slit along the seams on opposite sides of the bottom of the Flush-n-Sparkle cartridge cylinder, pry off the end-cap, discard the black foam, and put four of these tablets inside the cartridge. Replace the end cap and the cartridge is ready to go back into the dispenser.

    All that is left to discover is how long these tablets last in this application. Very happy so far.

    Note: The 1.5 lb (0.7 kg) bottle that I received contained 44 tablets. Each tablet weighs just a little over 1/2 oz (0.56 oz) or 15.9 grams. So I expect to get at least 11 refills of the cartridges for this price. Much cheaper and maybe less plastic going to the landfill.

    ++++++++++
    UPDATE: I've used these tabs for a week or so and can say they sure do put a lot more chlorine into the bowl than the refill cartridges from Fluidmaster, at least double. That means there is a noticeable bleach smell near the toilet, which may be a problem for some sensitive users. My wife has not complained yet so I am going to keep using them. Some folks may prefer the cleaner-smelling effect. The tabs are not dissolving too quickly either.

    Caution: I would be very concerned if we had pets drinking out of the toilets. Also I would not drop these tabs in the top tank without the cleaning system either, as I expect the high chlorine level would aggressively attack the rubber seals.

    ++++Update May 3, 2024++++

    I originally bought a dozen or so Flush-n-Sparkle cartridges. I just refilled about 8 empty cartridges that we have accumulated over the past several months. Each empty cartridge holds 3 or 4 of these HTH 1" tablets. We have 3 toilets and 3 family members, and we are all at home most of the time.

    I try to check the toilets around the first of each month and replace any cartridges that are mostly empty. (I use a sharpie to write the replacement date on the top of the cartridge to track it. This date is easy to erase later with an alcohol pad. I would say that in our use case, these refilled cartridges are lasting 4 - 5 weeks in each toilet.

    If there are a few remaining pieces of undissolved tablet in a used cartridge, you can just insert 3 new tablets and crush down the shards. If completely empty, then 4 tablets will fit. I have 7 of the original 44 tablets left, so it is time to reorder more HTH tablets. This is a much more affordable solution for us.
  • Kimberly
    5.0 out of 5 stars Great product
    Reviewed in the United States on November 13, 2024
    I've had a pool for years and this is my first choice.
    Water is clear, always.
  • Amazon Customer
    5.0 out of 5 stars Works Great
    Reviewed in the United States on November 28, 2024
    We buy this every 4 months or so - keeps out hot tub nice and clean. Highly recommend.

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