---
product_id: 22887003
title: "In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 25 Pounds"
brand: "in the swim"
price: "€ 478.14"
currency: EUR
in_stock: true
reviews_count: 8
category: "In The Swim"
url: https://www.desertcart.com.cy/products/22887003-in-the-swim-pool-shock-68-cal-hypo-granular-sanitizer
store_origin: CY
region: Cyprus
---

# 68% Cal-Hypo fast-acting sanitizer Crystal-clear water clarity Powerful bacteria & algae defense In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 25 Pounds

**Brand:** in the swim
**Price:** € 478.14
**Availability:** ✅ In Stock

## Summary

> 💦 Shock Your Pool, Own the Summer Vibe!

## 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 - 25 Pounds by in the swim
- **How much does it cost?** € 478.14 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/22887003-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

- • **Concentrated Power:** High 65-68% available chlorine ensures fewer treatments and longer-lasting clarity.
- • **Rapid Pool Revival:** Shock your pool with 68% calcium hypochlorite for instant algae and bacteria knockout.
- • **Effortless Maintenance:** Just 1 lb per 10,000 gallons weekly keeps your pool sparkling and swim-ready.
- • **Versatile Sanitization:** Perfect for above ground, in-ground pools, spas, and hot tubs—flexible and effective.
- • **Safe & Smart Application:** Pre-dissolve granules to protect liners while delivering deep pool sanitation.

## Overview

In The Swim Pool Shock is a premium 25-pound granular calcium hypochlorite sanitizer with 68% active chlorine, designed for fast, effective elimination of bacteria, algae, and microorganisms. Ideal for all pool types, it delivers crystal-clear water with minimal effort, making it the go-to choice for proactive pool managers who demand pristine swim conditions.

## Description

desertcart.com : In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 25 Pounds : Calcium Hypochlorite Granular : 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: Good price - Good product at a good price

## 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 | B002WKJ6IS |
| Best Sellers Rank | #414 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #8 in Swimming Pool Chlorine |
| Brand | In The Swim |
| Customer Reviews | 4.7 4.7 out of 5 stars (15,781) |
| Item Form | Granular |
| Item Weight | 25 pounds |
| Item model number | 25237 |
| Manufacturer | In The Swim Discount Pool Supplies |
| Product Benefits | Kills Bacteria, Maintains Clean Sanitized Water |
| Product Dimensions | 13.2 x 13 x 12.2 inches |
| UPC | 815100020700 |
| Unit Count | 400 Ounce |

## Product Details

- **Brand:** In The Swim
- **Item Form:** Granular
- **Item Weight:** 25 Pounds
- **Product Benefits:** Kills Bacteria, Maintains Clean Sanitized Water
- **UPC:** 815100020700

## Images

![In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 25 Pounds - Image 1](https://m.media-amazon.com/images/I/51htGLF-wFL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## 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.

### ⭐⭐⭐⭐⭐ Good price
*by F***L on January 23, 2026*

Good product at a good price

### ⭐⭐⭐⭐⭐ 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 - 25 Pounds
- In The Swim 3 Inch Stabilized Chlorine Tablets for Sanitizing Swimming Pools - Individually Wrapped, Slow Dissolving - 90% Available Chlorine - Tri-Chlor - 50 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 Cyprus*
*Store origin: CY*
*Last updated: 2026-02-13*