---
product_id: 14813735
title: "In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 6 X 1 Pound"
brand: "in the swim"
price: "¥21188"
currency: JPY
in_stock: true
reviews_count: 8
category: "In The Swim"
url: https://www.desertcart.jp/products/14813735-in-the-swim-pool-shock-68-cal-hypo-granular-sanitizer
store_origin: JP
region: Japan
---

# 68% Cal-Hypo fast-acting shock 65% available chlorine for crystal-clear water Defends against bacteria, algae & microorganisms In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 6 X 1 Pound

**Brand:** in the swim
**Price:** ¥21188
**Availability:** ✅ In Stock

## Summary

> 💦 Shock Your Pool Into Crystal Clear Perfection!

## Quick Answers

- **What is this?** In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 6 X 1 Pound by in the swim
- **How much does it cost?** ¥21188 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/14813735-in-the-swim-pool-shock-68-cal-hypo-granular-sanitizer)

## Best For

- in the swim enthusiasts

## Why This Product

- Trusted in the swim brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **High Chlorine Potency:** 65% available chlorine ensures unbeatable sanitization and sparkling water.
- • **Effortless Application:** Simply pre-dissolve or dilute to protect liners and maintain pristine water with ease.
- • **Rapid Algae Annihilation:** Experience lightning-fast pool clarity with 68% calcium hypochlorite power.
- • **Consistent Weekly Defense:** Use 1 lb per 10,000 gallons weekly to sustain optimal 5-10 ppm chlorine levels.
- • **Versatile Pool Protection:** Perfect for above ground, in-ground pools, spas, and hot tubs—your all-in-one sanitizer.

## Overview

In The Swim Pool Shock delivers a powerful 68% calcium hypochlorite granular formula with 65% available chlorine, designed for fast-acting algae control and comprehensive defense against bacteria and microorganisms. Suitable for all pool types, it ensures easy application and consistent weekly sanitization to keep your water sparkling clean and safe.

## Description

desertcart.com : In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 6 X 1 Pound : Pool Supplies : Patio, Lawn & Garden

Review: Fantastic Product - The package was originally mailed on time, but tracking showed that there was a problem with shipping, and it was rerouted back to the seller. I had to reach out several times. They responded saying that another order would be sent, but I never received a new tracking or order number, even though I had paid for it and needed it weeks ago. It finally arrived. I love this stuff and have ordered from the same seller in the past without any trouble. That is why they still got 5 stars. It goes a long way since it is a strong concentrate meant to be diluted. I use it around the house and farm, and occasionally to treat my camping and hiking gear.
Review: This Shock is all you need - This is the best shock on the market in my opinion and this is a very good price for 12.

## Features

- Fast-Acting Algae Control: Calcium Hypochlorite (Cal-Hypo) is an effective non-stabilized chlorine shock treatment, ideal for routine maintenance in your swimming pool
- Versatile Use: Suitable for above ground or in-ground swimming pools, spas, and hot tubs; Pre-dissolve or dilute to avoid bleaching the liner
- High Chlorine Content: 65% available chlorine, provides powerful sanitization for crystal-clear water
- Easy Application: Pre-dissolve or dilute to avoid bleaching swimming pool liners; Spread granules in the deepest part of the pool; Brush if needed
- Dosage: Use 1 Pound per 10,000 gallons weekly to maintain 5-10 ppm chlorine levels

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002WKM4A0 |
| Best Sellers Rank | #1,034 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #13 in Swimming Pool Chlorine |
| Brand | In The Swim |
| Customer Reviews | 4.7 4.7 out of 5 stars (15,753) |
| Is Discontinued By Manufacturer | No |
| Item Form | Granular |
| Item Weight | 6.7 pounds |
| Item model number | 25234 6X1 |
| Manufacturer | In The Swim |
| Product Benefits | Controls Algae, Kills Bacteria, Maintains Clean Sanitized Water |
| Product Dimensions | 10.3 x 8.4 x 4.7 inches |
| UPC | 815100023350 |
| Unit Count | 96 Ounce |

## Product Details

- **Brand:** In The Swim
- **Item Form:** Granular
- **Item Weight:** 6.7 Pounds
- **Product Benefits:** Controls Algae, Kills Bacteria, Maintains Clean Sanitized Water
- **UPC:** 815100023350

## Images

![In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 6 X 1 Pound - Image 1](https://m.media-amazon.com/images/I/71e+6HXeI8L.jpg)

## Questions & Answers

**Q: How large are the tabs (3 inch or smaller) and how many tabs in each 50 lb bucket?**
A: Granules are not tabs.  They are coarse particles, about the consistency of hominy grits.  There are probably several million granules in a 50 lb. bucket.  I'm going to go out on a limb here and estimate that there are 50 lbs of them. 
 What I do is fill the scoop (it comes inside the bucket) with granules,  get 1 to 2 gallons of water from my pool in a 5 gal. plastic bucket and pour in the particles.  I stir them around with a stirrer made of a short length of PVC pipe and break up any clumps that have formed over time.  I pour the slurry into the pool at several different points.  The granules are not stabilized chlorine (which most tabs are) but calcium hypochlorite (same chemical as bleach).

**Q: I feel dumb, but I can't figure out how to open this bucket. I've tried jostling the red tab and turning but to no avail. Any tips?**
A: I had this issue the first time as well.  Examine the red lock tab to see how it locks into place by falling into those holes.  You need to pull up on that.  Thing is, mine had already been pulled up.  So instead of concentrating my energy on that I stood up, grabbed the top of the bucket with both hands and turned it left in order to open it.  Simply grabbing it from the side with one hand was not enough the first time so you'll need both hands and grab from the top.  Have another person hold the red tab up at the same time and it should open easily.

**Q: Does this product contain a cyanide-based UV stablizer?**
A: It does not contain stabilizer.

**Q: can be used for potable/drinkable water and if it falls under NSF Standard 60?**
A: Haha! That's a good one! It works great for pool water.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fantastic Product
*by J***W on September 7, 2025*

The package was originally mailed on time, but tracking showed that there was a problem with shipping, and it was rerouted back to the seller. I had to reach out several times. They responded saying that another order would be sent, but I never received a new tracking or order number, even though I had paid for it and needed it weeks ago. It finally arrived. I love this stuff and have ordered from the same seller in the past without any trouble. That is why they still got 5 stars. It goes a long way since it is a strong concentrate meant to be diluted. I use it around the house and farm, and occasionally to treat my camping and hiking gear.

### ⭐⭐⭐⭐⭐ This Shock is all you need
*by L***S on January 4, 2026*

This is the best shock on the market in my opinion and this is a very good price for 12.

### ⭐⭐⭐⭐⭐ Pool shock
*by P***H on January 16, 2026*

Have purchased this last year and it worked super. Decided while it was on sale to take advantage of the discount. Will order from this seller again.

## Frequently Bought Together

- In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 6 X 1 Pound
- In The Swim 3 Inch Stabilized Chlorine Tablets for Sanitizing Swimming Pools - Individually Wrapped, Slow Dissolving - 90% Available Chlorine - Tri-Chlor - 10 Pounds
- Clorox® Pool&Spa™ Swimming Pool Algaecide and Clarifier, Prevents and Treats Pool Algae, Clears Water, 128 Fl Oz (Pack of 1)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-07*