--- product_id: 549409313 title: "Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced" brand: "hth" price: "€ 60.06" currency: EUR in_stock: true reviews_count: 8 category: "Hth" url: https://www.desertcart.sk/products/549409313-pool-shock-cal-hypo-formula-swimming-pool-care-1lb-pack store_origin: SK region: Slovakia --- # Fast-dissolving 4-in-1 formula Restores crystal-clear water in 24 hours Kills 90% of pool bacteria & algae Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced **Brand:** hth **Price:** € 60.06 **Availability:** ✅ In Stock ## Summary > 💦 Shock Your Pool Into Crystal Clarity—Fast, Fresh, Flawless! ## Quick Answers - **What is this?** Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced by hth - **How much does it cost?** € 60.06 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/549409313-pool-shock-cal-hypo-formula-swimming-pool-care-1lb-pack) ## 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 - • **Test & Triumph:** Pair with HTH 6-Way Test Strips for precise water balance and unbeatable pool care twice a week. - • **No Chlorine Lock:** Cal Hypo formula avoids cyanuric acid buildup, preventing overstabilization and keeping your pool balanced. - • **4-in-1 Powerhouse:** Sanitizes, kills bacteria & algae, reduces chlorine odor, and soothes irritation—all in one fast-acting formula. - • **Crystal Clear Confidence:** Experience sparkling pool water that’s ready for cannonballs in just 24 hours. - • **Universal Pool Compatibility:** Safe and effective for all pool types, including vinyl-lined and saltwater systems—no pool left behind. ## Overview HTH Pool Shock Cal Hypo Formula is a fast-dissolving, multi-functional 4-in-1 powder treatment that kills bacteria and algae, reduces chlorine odor and irritation, and restores crystal-clear water within 24 hours. Compatible with all pool types, it prevents chlorine lock by avoiding cyanuric acid buildup, ensuring optimal pool health and sparkling results every week. ## Description The HTH 4-in-1 Shock Treatment is the ultimate solution for crystal clear pool water. This fast-dissolving formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity. With its multi-functional shock treatment for weekly use, you can easily solve 90% of pool water problems within 24 hours. The Cal Hypo based formula sanitizes without adding cyanuric acid (CYA), which prevents overstabilization or chlorine lock. This product is suitable for all including-lined saltwater systems. For the best results, use the HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly. Stay all clear for cannonballs with HTH 4-in-1 Shock Treatment! Review: Works great and keeps pool crystal clear! - 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! Review: Clear water and instructions - Keeps my above ground pool clean within a matter of hours with no harsh oders!! Has been super effective for me. Water is crystal clear after some hours with the filter running. A little goes a long a way for me but of course do your research and know how much to add. I shock my pool weekly and the water does not feel harsh at all. ## Features - The information below is per-pack only - 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 | B0CFKK33FR | | Best Sellers Rank | #2,599 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #36 in Swimming Pool Chlorine | | Brand | HTH | | Brand Name | HTH | | Customer Reviews | 4.7 out of 5 stars 1,938 Reviews | | Included Components | HTH 52035 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 1lb | | Item Form | Powder | | Item Type Name | Swimming Pool Chemical Prevents Bacteria & Algae, Cal Hypo Formula | | Item Weight | 2 pounds | | Manufacturer | Innovative Water Care | | Manufacturer Part Number | 52035 | | Manufacturer Warranty Description | Warranty | | Model Number | 52035 | | Number of Items | 2 | | Product Benefits | Sanitizes,Prevents Bacteria,Kills Bacteria | | Unit Count | 32 Ounce | ## Product Details - **Brand:** HTH - **Item Weight:** 2 Pounds - **Item Form:** Powder - **Product Benefits:** Sanitizes,Prevents Bacteria,Kills Bacteria - **Number of Items:** 2 ## Images ![Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced - Image 1](https://m.media-amazon.com/images/I/71tgNexOXbL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great and keeps pool crystal clear! *by S***Y on April 9, 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! ### ⭐⭐⭐⭐⭐ Clear water and instructions *by J***A on August 4, 2026* Keeps my above ground pool clean within a matter of hours with no harsh oders!! Has been super effective for me. Water is crystal clear after some hours with the filter running. A little goes a long a way for me but of course do your research and know how much to add. I shock my pool weekly and the water does not feel harsh at all. ### ⭐⭐⭐⭐⭐ Good stuff that works great *by J***R on June 11, 2026* Great price for a needed product --- ## 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.sk/products/549409313-pool-shock-cal-hypo-formula-swimming-pool-care-1lb-pack](https://www.desertcart.sk/products/549409313-pool-shock-cal-hypo-formula-swimming-pool-care-1lb-pack) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-10-24*