---
product_id: 701646708
title: "In The Swim Cal-Chlor Pool Chlorine Granules - 25 lbs."
brand: "in the swim"
price: "$1714"
currency: NZD
in_stock: false
reviews_count: 5
url: https://www.desertcart.nz/products/701646708-in-the-swim-cal-chlor-pool-chlorine-granules-25-lbs
store_origin: NZ
region: New Zealand
---

# 65% available chlorine - ultra potent sanitization Fast-acting algae control for crystal-clear water Versatile for pools, spas & hot tubs In The Swim Cal-Chlor Pool Chlorine Granules - 25 lbs.

**Brand:** in the swim
**Price:** $1714
**Availability:** ❌ Out of Stock

## Summary

> 💧 Shock your pool into perfection with crystal-clear confidence!

## Quick Answers

- **What is this?** In The Swim Cal-Chlor Pool Chlorine Granules - 25 lbs. by in the swim
- **How much does it cost?** $1714 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/701646708-in-the-swim-cal-chlor-pool-chlorine-granules-25-lbs)

## 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

- • **Algae Annihilator:** Fast-acting formula keeps your pool sparkling and algae-free, so you never miss a swim.
- • **Power-Packed Purity:** 65% high-grade calcium hypochlorite delivers rapid, reliable sanitization every time.
- • **Effortless Application:** Pre-dissolve or dilute to protect liners and ensure even distribution with minimal effort.
- • **Universal Compatibility:** Perfectly safe for above ground, in-ground pools, spas, and hot tubs—your all-in-one water guardian.
- • **Consistent Chlorine Control:** Maintain ideal 5-10 ppm chlorine levels with a simple weekly 1 lb per 10,000 gallons dosage.

## Overview

In The Swim Cal-Chlor Pool Chlorine Granules offer a powerful 65% calcium hypochlorite formula designed for fast-acting algae control and superior sanitization. Suitable for all pool types and spas, this 25 lb pail ensures easy, precise dosing to maintain optimal chlorine levels and keep your water pristine and inviting.

## Description

Great prices on your favourite Gardening brands, and free delivery on eligible orders.

Review: Ordered a pail of shock as it was on sale. Delivered on time and in good condition. This was a great buy. No photo as it is just a pail of shock. I do like using this brand of shock.
Review: Excellent product and customer service.

## 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 |
| Customer Reviews | 4.6 4.6 out of 5 stars (607) |
| Date First Available | 13 Sept. 2023 |
| Item display height | 12.2 inches |
| Item display length | 13.2 inches |
| Item display weight | 11.34 kg |
| Item display width | 13 inches |
| Item model number | 25237 |
| Part number | 25237 |
| Product Dimensions | 33.53 x 33.02 x 30.99 cm; 11.34 kg |

## Product Details

- **Brand:** In The Swim
- **Item form:** Granular
- **Item weight:** 25 Pounds
- **Product benefits:** Maintains Clean Sanitized Water
- **UPC:** 815100020700

## Images

![In The Swim Cal-Chlor Pool Chlorine Granules - 25 lbs. - Image 1](https://m.media-amazon.com/images/I/41W9e+ipyNL.jpg)
![In The Swim Cal-Chlor Pool Chlorine Granules - 25 lbs. - Image 2](https://m.media-amazon.com/images/I/51NS2AfUj0L.jpg)
![In The Swim Cal-Chlor Pool Chlorine Granules - 25 lbs. - Image 3](https://m.media-amazon.com/images/I/51VRzL-5FRL.jpg)
![In The Swim Cal-Chlor Pool Chlorine Granules - 25 lbs. - Image 4](https://m.media-amazon.com/images/I/51htGLF-wFL.jpg)
![In The Swim Cal-Chlor Pool Chlorine Granules - 25 lbs. - Image 5](https://m.media-amazon.com/images/I/51r4Rkqm-kL.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

### ⭐⭐⭐⭐⭐ Review
*by A***R on 1 January 2026*

Ordered a pail of shock as it was on sale. Delivered on time and in good condition. This was a great buy. No photo as it is just a pail of shock. I do like using this brand of shock.

### ⭐⭐⭐⭐⭐ Review
*by A***A on 7 November 2025*

Excellent product and customer service.

### ⭐⭐⭐⭐⭐ Review
*by H***S on 17 October 2025*

Helped to get rid of black algae after brushing.

## 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 New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-10*