--- product_id: 17607144 title: "1-1901-12 Calcium Hypochlorite Pool Shock, 1-Pound, 12-Pack" brand: "drytec" price: "€ 278.11" currency: EUR in_stock: true reviews_count: 8 category: "Dry Tec" url: https://www.desertcart.sk/products/17607144-1-1901-12-calcium-hypochlorite-pool-shock-1-pound-12 store_origin: SK region: Slovakia --- # 5-10 ppm chlorine - lasting pool clarity 1 bag treats 10,000 gallons - precise dosing 68% Calcium Hypochlorite - powerful shock 1-1901-12 Calcium Hypochlorite Pool Shock, 1-Pound, 12-Pack **Brand:** drytec **Price:** € 278.11 **Availability:** ✅ In Stock ## Summary > 💧 Shock Your Pool Into Crystal Clear Perfection! ## Quick Answers - **What is this?** 1-1901-12 Calcium Hypochlorite Pool Shock, 1-Pound, 12-Pack by drytec - **How much does it cost?** € 278.11 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/17607144-1-1901-12-calcium-hypochlorite-pool-shock-1-pound-12) ## Best For - drytec enthusiasts ## Why This Product - Trusted drytec brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Powerful Pool Purifier:** 68% calcium hypochlorite delivers a potent shock to annihilate bacteria and algae. - • **Routine & Shock Treatment Ready:** Use weekly or as needed to prevent algae, odors, and irritation—your pool’s ultimate defense. - • **Optimized pH & Alkalinity Balance:** Maintain pH 7.2-7.6 and alkalinity 60-120 for swimmer comfort and peak performance. - • **Trusted by Thousands of Pool Pros:** 4.6-star rating from 1,440+ reviews proves it’s the go-to choice for sparkling pools. - • **Precision Dosing for Crystal Clear Water:** One bag per 10,000 gallons ensures perfect chlorine levels (5-10 ppm) every time. ## Overview DryTec 1-1901-12 Calcium Hypochlorite Pool Shock is a granular, high-strength pool treatment with 68% active chlorine. Each 1-pound bag treats 10,000 gallons, delivering 5-10 ppm available chlorine to destroy bacteria, algae, and organic contaminants. Designed for routine and shock treatments, it maintains optimal pH and alkalinity for swimmer comfort and water clarity. Trusted by thousands with a 4.6-star rating, this 12-pack ensures your pool stays pristine all season long. ## Description Use entire contents of bag when opened. If any granules settle to the bottom of the pool use brush to disperse. Add the recommended dosage of this product during evening hours while the filter pump is running. When adding this product to your pool, broadcast the product evenly over a wide area in the deepest part of the pool. If any granules settle to the bottom of the pool use brush to disperse. Water Balance: For best product performance, swimmer comfort, and crystal clear water: Maintain pH in the range of 7.2 to 7.6. Maintain total alkalinity in the range of 60 to 120. Maintain calcium hardness above 200 ppm. Use a reliable test kit that measures all these ranges. Use Pool Care Products to make adjustments. Follow label directions for each product. Do not enter pool until the free available chlorine residual is 1- 4 ppm for each of the below noted water treatment applications. OPENING YOUR POOL: For best results, see the Water Balance section above before treatment. Always adjust and maintain pH in the 7.2 to 7.6 range. Follow "SHOCK TREATMENT / SUPERCHLORINATION" directions on this package. Allow 30 minutes for product to disperse. Test free available chlorine residual with a pool test kit. Repeat treatment as needed. ROUTINE CHLORINATION: For best results, see Water Balance section above before treatment. Throughout the pool season, adjust and maintain pH at 7.2-7.6. Check available chlorine with a suitable test kit.SHOCK TREATMENT / SUPERCHLORINATION: Every 7 days, or as necessary to prevent pool problems, shock treat /superchlorinate the pool by adding one bag of this product per 10,000 gallons of water to provide 5 to 10 ppm available chlorine. Additional shock treatments may be required to correct problems which are caused by visible algae, high bathing loads, heavy wind and rainstorms. Additional shock treatments may also be required to correct problems such as unpleasant odors and eye irritation. Check the available chlorine with a suitable test kit. Review: Go-To Pool Shock - My go-to for keeping the pool crystal clear. Doesn’t raise CYA and packs a solid dose of calcium hypochlorite for an effective shock every time. Review: Stronger than most - This is a good value because the total available chlorine is higher than most brands. Chlorine has become unbelievably expensive!!! Double what it cost just a couple years ago. But despite this, the lower content brands didn't work very well. It might be a bit more expensive, but it's stronger and works better. Update 4/22/24: Just ordered again. Good stuff!! ## Features - One bag of this product per 10,000 gallons of water - Adjust and maintain pH at 7.2-7.6 - Maintain total alkalinity in the range of 60 to 120 - One bag of this product per 10,000 gallons of water provides 5 to 10 ppm available chlorine - 68% Calcium Hypochlorite ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00U2NORTU | | Best Sellers Rank | #2,108 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #42 in Swimming Pool Chlorine | | Brand | DryTec | | Brand Name | DryTec | | Customer Reviews | 4.6 out of 5 stars 1,440 Reviews | | Item Form | Granular | | Item Type Name | Pool Shock | | Item Weight | 12 pounds | | Manufacturer | Dry Tec | | Manufacturer Part Number | 1-1901--12 | | Model Number | 1-1901--12 | | Number of Items | 12 | | Number of Packs | 12 | | Package Size Name | 12-Pack | | Product Benefits | Destroys Organic Contaminants,Kills Bacteria,Controls Algae | | UPC | 034261119010 | | Unit Count | 12 Count | ## Product Details - **Brand:** DryTec - **Item Form:** Granular - **Item Weight:** 12 Pounds - **Product Benefits:** Destroys Organic Contaminants,Kills Bacteria,Controls Algae - **UPC:** 034261119010 ## Images ![1-1901-12 Calcium Hypochlorite Pool Shock, 1-Pound, 12-Pack - Image 1](https://m.media-amazon.com/images/I/91QtUsZZDpL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Go-To Pool Shock *by L***G on August 28, 2025* My go-to for keeping the pool crystal clear. Doesn’t raise CYA and packs a solid dose of calcium hypochlorite for an effective shock every time. ### ⭐⭐⭐⭐⭐ Stronger than most *by T***G on August 12, 2023* This is a good value because the total available chlorine is higher than most brands. Chlorine has become unbelievably expensive!!! Double what it cost just a couple years ago. But despite this, the lower content brands didn't work very well. It might be a bit more expensive, but it's stronger and works better. Update 4/22/24: Just ordered again. Good stuff!! ### ⭐⭐⭐⭐⭐ Amazon does it again *by A***R on January 28, 2026* Great product, excellent customer service --- ## 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/17607144-1-1901-12-calcium-hypochlorite-pool-shock-1-pound-12](https://www.desertcart.sk/products/17607144-1-1901-12-calcium-hypochlorite-pool-shock-1-pound-12) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-05*