--- product_id: 537868314 title: "HTH 67289 Swimming Pool Care Algae Guard Ultra, Swimming Pool Chemical, Long Lasting Formula, 32 fl oz" brand: "hth" price: "S$100" currency: SGD in_stock: true reviews_count: 8 url: https://www.desertcart.sg/products/537868314-hth-67289-swimming-pool-care-algae-guard-ultra-swimming-pool store_origin: SG region: Singapore --- # fast-acting, swim immediately safe for all pool types 3 months algae protection HTH 67289 Swimming Pool Care Algae Guard Ultra, Swimming Pool Chemical, Long Lasting Formula, 32 fl oz **Brand:** hth **Price:** S$100 **Availability:** ✅ In Stock ## Summary > 🛁 Dive into crystal-clear confidence—because your pool deserves the ultra guard! ## Quick Answers - **What is this?** HTH 67289 Swimming Pool Care Algae Guard Ultra, Swimming Pool Chemical, Long Lasting Formula, 32 fl oz by hth - **How much does it cost?** S$100 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/537868314-hth-67289-swimming-pool-care-algae-guard-ultra-swimming-pool) ## Best For - hth enthusiasts ## Why This Product - Trusted hth brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Swim Now, Worry Never:** Non-foaming, fast-acting formula lets you dive in right after application—no downtime, just clean water. - • **Optimized Routine Care:** Use every 3 months alongside HTH Shock and chlorine tablets for unbeatable pool clarity and hygiene. - • **Heavy-Duty Algae Control:** HTH’s strongest formula kills and prevents even the toughest algae blooms for a crystal-clear pool. - • **Universal Pool Compatibility:** Safe and non-staining for vinyl-lined, saltwater, and all pool surfaces—perfect for any setup. - • **Unmatched 3-Month Algae Defense:** Keeps your pool pristine with long-lasting protection against green, black, and mustard algae. ## Overview HTH 67289 Algae Guard Ultra is a powerful, non-foaming liquid algaecide designed to kill and prevent all types of algae in swimming pools for up to 3 months. Compatible with all pool types including vinyl-lined and saltwater, it allows immediate swimming after application and works best when used quarterly with complementary HTH 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. Review: Amazing product! - 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. Review: Algae Killer - I thank the gentleman that steered buyers to this product. It’s likely my fault for not maintaining my pools chemistry balance, but each year I get these spots that I believe is mustard algae. Chlorine resistant yellowish looking spots that I just couldn’t get rid of. This product has worked to stop them. I may have a few small residual spots after treatment but I need a new plaster job anyway. I have a small waterfall and get very little sudsing, can swim within 24 hours and don’t turn green like someone may have mentioned. I keep my dog (who drinks pool water) away until I’ve added more water to the pool or it rains. A very good product to fight algae when you’ve let your guard down! ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C5J9CFYZ | | Best Sellers Rank | #63,415 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #74 in Swimming Pool Algaecides | | Brand | HTH | | Brand Name | HTH | | Customer Reviews | 4.5 out of 5 stars 625 Reviews | | Included Components | HTH 67289 Swimming Pool Care Algae Guard Ultra, Swimming Pool Chemical, Long Lasting Formula, 32 fl oz | | Item Form | Liquid | | Item Type Name | Algaecide | | Item Weight | 1.23 kg | | Manufacturer | Innovative Water Care | | Manufacturer Part Number | 67289 | | Manufacturer Warranty Description | Warranty | | Model Number | 67289 | | Number of Items | 1 | | Number of Packs | 1 | | Package Size Name | 32 Fl Oz | | Product Benefits | Controls Algae, Maintains Clean Sanitized Water | | UPC | 073187672896 | | Unit Count | 32 Fluid Ounces | ## Product Details - **Brand:** HTH - **Item Form:** Liquid - **Item Weight:** 1.23 kg - **Product Benefits:** Controls Algae, Maintains Clean Sanitized Water - **UPC:** 073187672896 ## Images ![HTH 67289 Swimming Pool Care Algae Guard Ultra, Swimming Pool Chemical, Long Lasting Formula, 32 fl oz - Image 1](https://m.media-amazon.com/images/I/61cxd8TSCJL.jpg) ![HTH 67289 Swimming Pool Care Algae Guard Ultra, Swimming Pool Chemical, Long Lasting Formula, 32 fl oz - Image 2](https://m.media-amazon.com/images/I/51H1YhyB+DL.jpg) ![HTH 67289 Swimming Pool Care Algae Guard Ultra, Swimming Pool Chemical, Long Lasting Formula, 32 fl oz - Image 3](https://m.media-amazon.com/images/I/71iIQxSozqL.jpg) ![HTH 67289 Swimming Pool Care Algae Guard Ultra, Swimming Pool Chemical, Long Lasting Formula, 32 fl oz - Image 4](https://m.media-amazon.com/images/I/81AOAkaEIML.jpg) ![HTH 67289 Swimming Pool Care Algae Guard Ultra, Swimming Pool Chemical, Long Lasting Formula, 32 fl oz - Image 5](https://m.media-amazon.com/images/I/71y4v6zL-oL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Amazing product! *by P***Y on August 16, 2024* 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. ### ⭐⭐⭐⭐⭐ Algae Killer *by O***R on August 29, 2025* I thank the gentleman that steered buyers to this product. It’s likely my fault for not maintaining my pools chemistry balance, but each year I get these spots that I believe is mustard algae. Chlorine resistant yellowish looking spots that I just couldn’t get rid of. This product has worked to stop them. I may have a few small residual spots after treatment but I need a new plaster job anyway. I have a small waterfall and get very little sudsing, can swim within 24 hours and don’t turn green like someone may have mentioned. I keep my dog (who drinks pool water) away until I’ve added more water to the pool or it rains. A very good product to fight algae when you’ve let your guard down! ### ⭐⭐⭐⭐⭐ Clean Pool *by A***R on September 9, 2025* I have a 13,000 gallon small inground pool. It's a salt pool with a chlorinator. Summer heat here in AZ plus dust storms took a toll this summer. Should have cleaned my filters sooner. Started to get black algae. Shocked it and tried many things. I bought this, put in the whole 32 ounces in pool. Ran pool for 24 hours and it was all completely gone. It was crazy. No foaming or anything. Anyway, I don't write reviews but this one needed it. Mine was the Algae Guard + Ultra. ## Frequently Bought Together - HTH 67289 Swimming Pool Care Algae Guard Ultra, Swimming Pool Chemical, Long Lasting Formula, 32 fl oz - HTH 52037R Pool Care Shock Advanced, Swimming Pool Chemical - Cal Hypo Formula, Prevents Bacteria & Algae, Restores Crystal Clear Water - Shock Treatment, 1lb (12 Pack) - HTH 67067 Swimming Pool Care Clarifier Advanced - Crystal Clear Water in 24 Hours --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/537868314-hth-67289-swimming-pool-care-algae-guard-ultra-swimming-pool](https://www.desertcart.sg/products/537868314-hth-67289-swimming-pool-care-algae-guard-ultra-swimming-pool) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-08*