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HTH

HTH 67289 Swimming Pool Care Algae Guard Ultra, Swimming Pool Chemical, Long Lasting Formula, 32 fl oz

    • Based on 1,628 reviews
Condition: New
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$35.95 Why this price?

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Availability: In Stock.
Fulfilled by Wesson Hardware
Arrives Thursday, May 22
Order within 5 hours and 18 minutes
Available payment plans shown during checkout

Style: Ultra Algaecide


Features

  • BENEFIT: Get long-lasting protection from extreme algae; This non-foaming algae control kills and prevents blooms of all algae types
  • OUR STRONGEST ALGAE CONTROL: Kills, prevents and protects against regrowth of heavy green, black and mustard swimming pool algae for up to 3 months
  • NON-FOAMING, FAST-ACTING: Add HTH Algae Guard Ultra directly to your swimming pool water and swim right away
  • COMPATIBLE WITH ALL POOLS: This non-staining formula is great for all swimming pools including vinyl-lined and saltwater systems
  • YOU'RE ALL CLEAR WITH HTH: For best results, use HTH Algae Guard Ultra every 3 months; Works great with HTH Shock products

Description

Get long-lasting protection from extreme algae. Our strongest, non-foaming algae control kills blooms and prevents regrowth for up to 3 months. HTH Algae Guard Ultra is HTH's strongest algae control. It kills, prevents and protects against regrowth of heavy green, black and mustard swimming pool algae for up to 3 months. Its compatible with all pools. The non-staining formula is great for all swimming pools including vinyl-lined and salt water systems. It non- foaming and fast-acting formula means you can add HTH Algae Guard Ultra directly to your swimming pool water and swim right away! For best results, use HTH Algae Guard Ultra every 3 months in combination with other HTH products like HTH shock and HTH chlorine tablets.

Brand: HTH


Item Form: Liquid


Product Benefits: Controls Algae, Maintains Clean Sanitized Water


UPC:


Number of Items: 1


Brand: HTH


Item Form: Liquid


Product Benefits: Controls Algae, Maintains Clean Sanitized Water


UPC: 073187672896


Number of Items: 1


Unit Count: 32.0 Fl Oz


Product Dimensions: 2.25 x 4.23 x 9.25 inches


Item Weight: 2.75 pounds


Department: Unisex-Adult


Manufacturer: Innovative Water Care


Item model number: 67289


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Amazing product!
Style: Ultra Algaecide
Review Image by Punkin's Mommy Punkin's Mommy
Review Image by Punkin's Mommy Punkin's Mommy
Review Image by Punkin's Mommy Punkin's Mommy
This product is amazing! My pool has never been this blue. We recently had a tropical storm come through our area dumping massive amounts of rain which caused an ugly mustard algae bloom. I must have dumped 5 gallons of chlorine into it over the course of a week and the algae wouldn't budge - it actually got worse. In desperation, I ordered this product. We put 14 fluid ounces in immediately. It lightened up the pool, but there was still some algae present, so we added the rest of the 32 ounce bottle the next day. Overnight the algae disappeared and the pool got even bluer as time went on.There is currently no chlorine left in the pool and it is still blue with no signs of algae. I put the last of the product in on Monday and today is Friday. This product works miracles. I wish I had known about it sooner as I could have saved myself a ton of money and grief. Other users have mentioned having trouble with foam. We have had zero foam. The only thing I can think is maybe the product is interacting with other chemicals present in their water, because we have had no foam and we used the whole bottle. Excellent product. I highly recommend for stubborn algae problems. ... show more
Reviewed in the United States on August 16, 2024 by Punkin's Mommy Punkin's Mommy
    • The Only Algaecide That Works!
Style: Ultra Algaecide
I've tried many different brands of algaecide, but this is the only one that actually keeps my pool clear of algae! It works fast and effectively, preventing any buildup and keeping the water crystal clear. I no longer have to deal with stubborn green or yellow algae like I did with other products. If you're tired of wasting money on algaecides that don’t work, I highly recommend giving this one a try. It’s a game-changer for pool maintenance! ... show more
Reviewed in the United States on February 27, 2025 by J C
    • Working good in a very old gunite pool
Style: Ultra Algaecide
I used this in my pool yesterday and it seems to really be doing it's job killing off the algae. I have an almost 50 year old pool and have issues every year and this seems to be really helping!
Reviewed in the United States on April 30, 2025 by Melissa M. Spahr
    • keeps the algae out. Works good.
Style: Ultra Algaecide
keeps the algae out. Works good.
Reviewed in the United States on August 8, 2024 by Amazon Customer
    • Easy to use.
Style: Ultra Algaecide
Works and was less expensive than the pool supply store.
Reviewed in the United States on March 11, 2025 by glenn
    • Works for months at a time
Style: Ultra Algaecide
My experience has been that this product works for 3-4 months minimum per application, which is awesome in my opinion. If it's not working like that, your have other issues with the chemistry in your pool that you need to address first. I also, unfortunately, know this from experience. Get your total alkalinty, calcium hardness, and chlorine stabilizer levels right and this stuff will work for ages. I've had a week here and there where I was lazy about chlorine, and it dropped pretty low but I still didn't get ANY algae, which was an issue before I started using this stuff. This review is specifically for HTH 67289 (the "Ultra", not the "Advanced") which contains copper sulfate, the magic ingredient. ... show more
Reviewed in the United States on May 1, 2025 by Matt F.
    • Great Algae Kill.
Style: Ultra Algaecide
Greatest stuff on planet earth! Clear, Clean Water! It was cloudy all summer, if there’s white algae, couldn’t get rid of it, end of summer found this and dumped 2 bottles into the pool and crystal clear! Bought more and am ready for this summer!
Reviewed in the United States on May 1, 2025 by Trent
    • Best Algae Guard . 3 month coverage
Style: Ultra Algaecide
I have used HTH products before. I tried a few other name brands that went on sale. I have had over 5 homes with pools. The constant adding chemicals and monitoring is a nightmare during hot months. This Algae Guard from HTH is amazing. 90+ days and no need of adding any algae or clarifier. Chlorine tablets only . Water Clarity and PH are perfect. I thought a little pricy at first but it actually last 3 months. Great Product ... show more
Reviewed in the United States on December 2, 2024 by Harold Childs

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