Search  for anything...
HTH

HTH 67084 Pool Care Algae Guard Advanced, All Algae Eliminator for Swimming Pools - Fast-Acting, Destroys & Prevents Green, Black & Mustard Algae, Keeps Pool Water Crystal Clear, 32 fl oz

  • Based on 1,631 reviews
Condition: New
Checking for product changes
$20.78 Why this price?

Buy Now, Pay Later

As low as $5 / mo
  • – 4-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 Saturday, May 24
Order within 23 hours and 7 minutes
Available payment plans shown during checkout

Recently Viewed

Style: Advanced Algaecide


Features

  • BENEFIT: Be all clear for more summertime fun; Use this powerful, non-foaming formula to kill and prevent heavy amounts of algae blooms for crystal clear pool water
  • POWERFUL ALGAE CONTROL: HTH Algae Guard Advanced effectively destroys and prevents heavy green, black and mustard algae blooms
  • NON-FOAMING, FAST-ACTING: Add HTH Algae Guard Advanced directly to your swimming pool water and swim right away
  • COMPATIBLE WITH ALL POOLS: This product 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 Advanced as part of your weekly maintenance routine; Works great with HTH Shock products

Description

YOU'RE ALL CLEAR WITH HTH: For best results, use HTH Algae Guard Advanced as part of your weekly maintenance routine; Works great with HTH Shock products

Brand: HTH Store


Item Weight: 1 Pounds


Item Form: Liquid


Product Benefits: Controls Algae


UPC:


Brand: HTH Store


Item Weight: 1 Pounds


Item Form: Liquid


Product Benefits: Controls Algae


UPC: 073187670847


Global Trade Identification Number: 47


Number of Items: 1


Unit Count: 32.0 Fl Oz


Product Dimensions: 4.23 x 2.25 x 9.5 inches


Item Weight: 1 pounds


Department: Unisex-Adult


Manufacturer: HTH Store


Country of Origin: China


Item model number: HTH - 73187670847


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 24

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

    • 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
    • Concentrated and works well.
Style: Advanced Algaecide
Although the price would seem to be high the reality is it is concentrated and you need a lot less as compared to other algaecide products that are typically sold in the gallon size. This is a better buy and works well.
Reviewed in the United States on May 4, 2025 by la
    • 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
    • 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.

Can't find a product?

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