---
product_id: 421690139
title: "Zappit 73% Cal Hypo Pool Shock - Calcium Hypochlorite Super Shock 50lb"
brand: "zapp it"
price: "€ 895.38"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/421690139-zappit-73-cal-hypo-pool-shock-calcium-hypochlorite-super-shock
store_origin: IE
region: Ireland
---

# Fast dissolving 70% chlorine 2ppm for 40k gal Zappit 73% Cal Hypo Pool Shock - Calcium Hypochlorite Super Shock 50lb

**Brand:** zapp it
**Price:** € 895.38
**Availability:** ✅ In Stock

## Summary

> 🏖️ Dive into Sparkling Clean Waters!

## Quick Answers

- **What is this?** Zappit 73% Cal Hypo Pool Shock - Calcium Hypochlorite Super Shock 50lb by zapp it
- **How much does it cost?** € 895.38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/421690139-zappit-73-cal-hypo-pool-shock-calcium-hypochlorite-super-shock)

## Best For

- zapp it enthusiasts

## Why This Product

- Trusted zapp it brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Savings:** Choose our 50lb bucket for maximum value and convenience.
- • **Rapid Dissolve Formula:** Get your pool ready in no time with our fast-acting granules.
- • **Perfect for Large Pools:** One pound treats up to 40,000 gallons—ideal for community pools!
- • **Unleash the Power of Clean:** Experience 70% available chlorine for crystal-clear water!
- • **Signature Delivery Assurance:** Rest easy knowing your order is secure with signature required.

## Overview

Zappit 73% Cal Hypo Pool Shock is a powerful calcium hypochlorite super shock treatment designed for effective pool sanitation. With a fast-dissolving granular formula, it provides 70% available chlorine, ensuring your pool remains clean and safe. One pound can treat up to 40,000 gallons of water, making it perfect for both residential and community pools. Available in convenient 50lb buckets, it offers bulk savings and peace of mind with signature delivery.

## Description

The Zappit 73 Pool Shock is 73% Calcium Hypochlorite with 70% available chlorine. This granular formula comes in a bucket and saves you time and money by quickly dissolving to destroy waste, algae, and bacteria in your swimming pool. This powerful shock treatment is great for spring start up, gives a quick chlorine boost, and helps to balance your pool water chemistry. One pound treats 16,500 gallons of pool water. Use the Zappit 73 Shock Treatment in your swimming pool for more fresh and clear

## Features

- SIGNATURE REQUIRED AT TIME OF DELIVERY
- 70% available chlorine, Pool Shock and Super Chlorinator
- Fast dissolving granular formula
- 1 lb will provide 2ppm of available chlorine in 40,000 gallon pool
- Available in 50lb Buckets- 100lb option arrives as two 50lb buckets for no extra charge!

## Images

![Zappit 73% Cal Hypo Pool Shock - Calcium Hypochlorite Super Shock 50lb - Image 1](https://m.media-amazon.com/images/I/51MwzAAex7L.jpg)

## Questions & Answers

**Q: Does it contain  stabilizer, or is it not stabilized?**
A: I bought this product because calcium is not supposed to have stabilizer, but after five applications, my CYA reading is increasing. I am not happy.

**Q: Is it a loose product and if so dose it come with a measuring cup for the required 1lb add ?**
A: As the picture shows, it comes in a 50 lb bucket.  There is a plastic measuring cup in it, but I didn't find it until i was half way through the bucket.

**Q: how long ship???????**
A: My only problem with shipping is that you have to be present for delivery.  We wound up having to pick it up at our local warehouse for fedex.

**Q: Can I use this for waste water treatment?**
A: I am no chemist, but it does clear up the pool when it turns green.  So I suppose that you could, but I really do not know.  Best of luck.

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**Shop now:** [https://www.desertcart.ie/products/421690139-zappit-73-cal-hypo-pool-shock-calcium-hypochlorite-super-shock](https://www.desertcart.ie/products/421690139-zappit-73-cal-hypo-pool-shock-calcium-hypochlorite-super-shock)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-20*