--- product_id: 508004519 title: "Granular Calcium Hypochlorite (Shock) 55lb Pail by Aqua-Org Plus" brand: "pyrock chemical" price: "¥131088" currency: JPY in_stock: true category: "Pyrock Chemical" url: https://www.desertcart.jp/products/508004519-granular-calcium-hypochlorite-shock-55lb-pail-by-aqua-org-plus store_origin: JP region: Japan --- # 65% fast-acting calcium hypochlorite compatible with pools, spas & hot tubs 50 lb professional-grade pail Granular Calcium Hypochlorite (Shock) 55lb Pail by Aqua-Org Plus **Brand:** pyrock chemical **Price:** ¥131088 **Availability:** ✅ In Stock ## Summary > 💧 Dive into crystal-clear perfection with Pyrock’s Pool Shock! ## Quick Answers - **What is this?** Granular Calcium Hypochlorite (Shock) 55lb Pail by Aqua-Org Plus by pyrock chemical - **How much does it cost?** ¥131088 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/508004519-granular-calcium-hypochlorite-shock-55lb-pail-by-aqua-org-plus) ## Best For - pyrock chemical enthusiasts ## Why This Product - Trusted pyrock chemical brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Experts:** Professional-grade formula solves 90% of common pool water issues - • **Clarity You Can See:** Restores sparkling water clarity and optimal chlorine levels effortlessly - • **Bulk Supply, Bulk Value:** 50-pound pail ensures long-lasting maintenance without frequent repurchasing - • **Shock Your Pool Back to Life:** Powerful 65% Cal Hypo granules eliminate algae and contaminants fast - • **Universal Pool Compatibility:** Perfect for in-ground, above-ground pools, spas, and hot tubs alike ## Overview Pyrock Chemical’s Pool Shock is a 50-pound pail of 65% granular calcium hypochlorite designed for fast, effective pool sanitation. Suitable for all pool types including in-ground, above-ground, spas, and hot tubs, this professional-grade formula eliminates algae, restores water clarity, and raises chlorine levels to maintain pristine swimming conditions. Trusted by pool maintenance experts, it addresses 90% of common pool water problems with ease. ## Description desertcart.com : Pool Shock by Pyrock Chemical - 65% Granular Cal Hypo - Swimming Pool Shock for In-Ground, Above Ground, Spas & Hot Tubs - 50 Pound Pail : Patio, Lawn & Garden ## Features - PRODUCT SPECS: 50 pound bucket of Aqua Org Plus calcium hypochlorite (pool shock). Works in in-ground, above-ground pools, spas and hot tubs. 65% Cal Hypo Granules. Great for regular maintenance. - KEY FEATURES: Fast acting Aqua Org Plus calcium hypochlorite & professional-grade formula tackles algae blooms, restores water clarity, raises chlorine levels to eliminate unwanted contaminants. Professional formula trusted by pool maintenance experts. Solves 90% of pool water problems. - DIRECTIONS: Ensure the pool filter is running. Measure (1lb for 10,000 gallons of water) & pour Aqua Org Plus cal hypo into water directly. Distribute evenly. Use a pool brush to ensure granules dissolve into the water and aren’t sitting on the bottom of the pool. Ensure proper circulation and avoid swimming until chlorine returns to 1-4 ppm. - BENEFITS: Non-stabilized Aqua Org Plus formula (no CYA’s) to prevent chlorine lock. Effective for all swimming pool types including pools with liners, gunite pools, and saltwater pool systems. Regular testing of pool water and maintenance are essential for optimal shock treatment results. - BEST PRACTICES: Keep Aqua Org Plus products out of reach of children. Avoid direct contact with skin and eyes. Use in a well ventilated area. Store in a cool dry place, away from sunlight. Follow guidelines and usage instructions provided by the manufacturer. Do not add directly into the pool floater or skimmers. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BRW7SPY9 | | Best Sellers Rank | #4,697 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #70 in Swimming Pool Chlorine | | Brand Name | Pyrock Chemical | | Customer Reviews | 4.0 4.0 out of 5 stars (1,368) | | Global Trade Identification Number | 00810100711405 | | Item Form | Granular | | Item Type Name | Pool Shock | | Item Weight | 55 pounds | | Manufacturer | Organic Industries | | Manufacturer Part Number | R-CH-O65-EUP-18-P100 | | Model Number | 065 | | Number of Items | 1 | | Number of Packs | 1 | | Package Size Name | 50 Pound Pail | | Product Benefits | Eliminates algae, restores water clarity, and raises chlorine levels, trusted by pool maintenance experts for various pool types | | UPC | 810100711405 | | Unit Count | 800 Ounce | ## Product Details - **Brand:** Pyrock Chemical - **Item Form:** Granular - **Item Weight:** 55 pounds - **UPC:** 810100711405 ## Images ![Granular Calcium Hypochlorite (Shock) 55lb Pail by Aqua-Org Plus - Image 1](https://m.media-amazon.com/images/I/7169xf6PKIL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can i use for above ground pool is safe for my liner?** A: Yes **Q: What’s in the bucket? Powder in bulk or pouches? If pouches, what’s the quantity in 1 pouch?** A: It's a bit lk of one(1) plastic bag with 55 lbs of shock. FYI the bucket top is a challenge to open **Q: How many cups in 1lb?** A: About 2. **Q: How much is needed for opening of pool? Then what is needed for a weekly dose?** A: Depends upon season, amount of water in pool, and weather algae visible or not, and if stabilizer present. This product isn't for daily chlorination, but rather of weekly super chlorination in warmer months, and shock treatment if algae visible. Must know approx how many gallons of water in pool. Would start by measuring pool dimensions, then go to pool store for water test and initial help. ## Frequently Bought Together - Pool Shock by Aqua Org Plus - 65% Granular Cal Hypo - Swimming Pool Shock for In-Ground, Above Ground, Spas & Hot Tubs - 50 Pound Pail - C3 3" Stabilized Chlorine Tablets for Swimming Pools | Easy to Use | for Above Ground or Inground Pool | Individually Wrapped | Slow Dissolving | 50 lbs - 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.jp/products/508004519-granular-calcium-hypochlorite-shock-55lb-pail-by-aqua-org-plus](https://www.desertcart.jp/products/508004519-granular-calcium-hypochlorite-shock-55lb-pail-by-aqua-org-plus) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-14*