--- product_id: 724940534 title: "HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 12 Count(Pack of 1)" brand: "hth" price: "VT44747" currency: VUV in_stock: false reviews_count: 5 url: https://www.desertcart.vu/products/724940534-hth-52037-swimming-pool-care-shock-advanced-swimming-pool-chemical store_origin: VU region: Vanuatu --- # Fast-dissolving 4-in-1 formula Compatible with all pool types Restores crystal-clear water in 24 hrs HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 12 Count(Pack of 1) **Brand:** hth **Price:** VT44747 **Availability:** ❌ Out of Stock ## Summary > 💦 Dive into crystal-clear confidence—your pool’s glow-up starts here! ## Quick Answers - **What is this?** HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 12 Count(Pack of 1) by hth - **How much does it cost?** VT44747 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/724940534-hth-52037-swimming-pool-care-shock-advanced-swimming-pool-chemical) ## 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 - • **Tested & Trusted Routine:** Pair with HTH 6-Way Test Strips for perfect water balance every week - • **No More Chlorine Overload:** Cal Hypo formula avoids chlorine lock & overstabilization - • **Sparkle Like Never Before:** Visibly brilliant clarity without harsh odors or irritation - • **Shock Your Pool Back to Life:** Kills 90% of bacteria & algae within 24 hours - • **Universal Pool Compatibility:** Safe for vinyl-lined, saltwater, and all pool systems ## Overview HTH 52037 Swimming Pool Care Shock Advanced is a fast-acting, multi-functional Cal Hypo shock treatment that kills bacteria and algae, reduces chlorine odor and irritation, and restores crystal-clear water within 24 hours. Compatible with all pool types including vinyl-lined and saltwater pools, it prevents chlorine lock by not adding cyanuric acid. For optimal results, use weekly alongside HTH 6-Way Test Strips. ## Description Product Description The HTH 4-in-1 Shock Treatment is a must-have for anyone who wants to keep their pool water crystal clear. This fast-dissolving formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity. Its multi-functional shock treatment for weekly use can solve 90% of pool water problems within 24 hours. The Cal Hypo based formula sanitizes without adding cyanuric acid (CYA), preventing overstabilization or chlorine lock. Compatible with all swimming pools, including vinyl-lined pools and saltwater systems, this product is perfect for everyone. Use it with the HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly for the best results. With HTH 4-in-1 Shock Treatment, you'll always stay all clear for cannonballs! Ingredients Chlorine Tabs P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Directions For best results, use with HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly. Add the recommended amount of shock treatment to the pool water based on the pool size and follow the instructions on the test strips to maintain water quality. Safety Warning For external use only. Avoid contact with eyes. See more Review: If you are looking for a straightforward way to keep your pool or hot tub inviting, the HTH Shock Ultra is a highly effective choice. This fast-dissolving, 4-in-1 formula is designed to solve 90% of common water problems within 24 hours, making it a staple for regular maintenance. I buy these every couple of months because they work wonders for both in-ground pools and hot tubs. The Cal Hypo-based formula is a standout because it sanitizes without adding cyanuric acid (CYA), which helps you avoid "chlorine lock" and keeps your water chemistry balanced longer. Why this shock treatment is a great choice for your maintenance routine: Restores Clarity Quickly: It effectively kills bacteria and algae while reducing the strong chlorine odor and eye irritation often found in busy pools. Multi-Functional Performance: This treatment not only sanitizes but also provides a visibly brilliant sparkle to the water by removing organic contaminants. Universal Compatibility: It is safe for use in all swimming pool types, including vinyl-lined pools and saltwater systems, providing peace of mind regardless of your setup. Convenient Weekly Use: Designed for easy application, this shock treatment helps you maintain a healthy environment for your family with minimal effort. I haven't had any issues with packages arriving broken or anything leaking out in the box. This 6-pack lasts me about 2 months as I use it for an in-between. Review: It works perfectly to keep my pool clean ## Features - Causes severe skin burns and eye damage. - Harmful if swallowed. - May cause respiratory irritation. - May intensify fire; oxidiser. - Toxic if inhaled. - Use biocides safely. Always read the label and product information before use. - BENEFITS: Stay all clear for cannonballs; This fast-dissolving, convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity - FEATURES: Multi-functional shock treatment for weekly use to solve 90% of pool water problems within 24 hours and restore crystal clarity - VISIBLY BRILLIANT SPARKLE: This Cal Hypo based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock - COMPATIBLE WITH ALL SWIMMING POOLS: This product is great for all pool types including vinyl-lined pools and saltwater systems - YOU'RE ALL CLEAR WITH HTH: For best results, use with HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09R82X1S5 | | Benefits | Prevents Bacteria,Sanitizes,Kills Bacteria | | Best Sellers Rank | 284,948 in Garden ( See Top 100 in Garden ) 1,028 in Chlorine | | Brand Name | HTH | | Customer Reviews | 4.7 4.7 out of 5 stars (17,788) | | Included Components | HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 12 Count(Pack of 1) | | Item Form | Powder | | Item Type Name | Swimming Pool Chemical Prevents Bacteria & Algae, Cal Hypo Formula | | Item Weight | 1 Pounds | | Manufacturer | HTH | | UPC | 073187520371 | | Unit Count | 192.0 gram | ## Product Details - **Brand:** HTH - **Item form:** Powder - **Item weight:** 1 Pounds - **Product benefits:** Prevents Bacteria,Sanitizes,Kills Bacteria - **UPC:** 073187520371 ## Images ![HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 12 Count(Pack of 1) - Image 1](https://m.media-amazon.com/images/I/71HW8DNg6EL.jpg) ![HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 12 Count(Pack of 1) - Image 2](https://m.media-amazon.com/images/I/8135js+ww6L.jpg) ![HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 12 Count(Pack of 1) - Image 3](https://m.media-amazon.com/images/I/71sX3WORZLL.jpg) ![HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 12 Count(Pack of 1) - Image 4](https://m.media-amazon.com/images/I/81v6v8TEYIL.jpg) ![HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 12 Count(Pack of 1) - Image 5](https://m.media-amazon.com/images/I/71ndcwDEWHL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by F***L on 24 January 2026* If you are looking for a straightforward way to keep your pool or hot tub inviting, the HTH Shock Ultra is a highly effective choice. This fast-dissolving, 4-in-1 formula is designed to solve 90% of common water problems within 24 hours, making it a staple for regular maintenance. I buy these every couple of months because they work wonders for both in-ground pools and hot tubs. The Cal Hypo-based formula is a standout because it sanitizes without adding cyanuric acid (CYA), which helps you avoid "chlorine lock" and keeps your water chemistry balanced longer. Why this shock treatment is a great choice for your maintenance routine: Restores Clarity Quickly: It effectively kills bacteria and algae while reducing the strong chlorine odor and eye irritation often found in busy pools. Multi-Functional Performance: This treatment not only sanitizes but also provides a visibly brilliant sparkle to the water by removing organic contaminants. Universal Compatibility: It is safe for use in all swimming pool types, including vinyl-lined pools and saltwater systems, providing peace of mind regardless of your setup. Convenient Weekly Use: Designed for easy application, this shock treatment helps you maintain a healthy environment for your family with minimal effort. I haven't had any issues with packages arriving broken or anything leaking out in the box. This 6-pack lasts me about 2 months as I use it for an in-between. ### ⭐⭐⭐⭐⭐ Review *by J***Y on 5 June 2025* It works perfectly to keep my pool clean ### ⭐⭐⭐⭐⭐ Review *by S***Y on 9 April 2026* This pool shock works really well! It cleared up the water quickly and helped keep everything clean and balanced. Easy to use and does exactly what it’s supposed to. I’ve noticed a big improvement in water clarity after using it, and it’s been reliable every time. Great value for the price and a must-have for pool maintenance. Highly recommend for anyone looking to keep their pool in great condition! ## Frequently Bought Together - HTH 52037R Pool Care Shock Advanced, Swimming Pool Chemical - Cal Hypo Formula, Prevents Bacteria & Algae, Restores Crystal Clear Water - Shock Treatment, 1lb (12 Pack) - Clorox Pool&Spa XTRABLUE 3” Chlorinating Tablets, Individually Wrapped, Kills Bacteria & Stops Algae (5 LB) - Clorox® Pool&Spa™ Swimming Pool Algaecide and Clarifier, Prevents and Treats Pool Algae, Clears Water, 128 Fl Oz (Pack of 1) --- ## 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.vu/products/724940534-hth-52037-swimming-pool-care-shock-advanced-swimming-pool-chemical](https://www.desertcart.vu/products/724940534-hth-52037-swimming-pool-care-shock-advanced-swimming-pool-chemical) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-09*