---
product_id: 61064812
title: "Rx Clear Mega Shock | 73% Calcium Hypochlorite | Kills Algae in Swimming Pools | Works As Pool Sanitizer Clarifier and Algicide | One Pound Bags | 6 Pack"
brand: "rx clear"
price: "₪420"
currency: ILS
in_stock: true
reviews_count: 8
category: "Rx Clear"
url: https://www.desertcart.co.il/products/61064812-rx-clear-mega-shock-73-calcium-hypochlorite-kills-algae-in
store_origin: IL
region: Israel
---

# Nighttime application - Maximize algae kill efficiency 73% Calcium Hypochlorite - Ultra-strong chlorine punch 1 lb per 10,000 gal dosing - Precise, measurable pool care Rx Clear Mega Shock | 73% Calcium Hypochlorite | Kills Algae in Swimming Pools | Works As Pool Sanitizer Clarifier and Algicide | One Pound Bags | 6 Pack

**Brand:** rx clear
**Price:** ₪420
**Availability:** ✅ In Stock

## Summary

> 💧 Shock your pool back to life with crystal clarity!

## Quick Answers

- **What is this?** Rx Clear Mega Shock | 73% Calcium Hypochlorite | Kills Algae in Swimming Pools | Works As Pool Sanitizer Clarifier and Algicide | One Pound Bags | 6 Pack by rx clear
- **How much does it cost?** ₪420 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/61064812-rx-clear-mega-shock-73-calcium-hypochlorite-kills-algae-in)

## Best For

- rx clear enthusiasts

## Why This Product

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

## Key Features

- • **Value 6-Pack:** Six 1-pound bags for long-lasting pool care without breaking the bank
- • **Precision Dosing:** Easy 1 lb per 10,000 gallons formula ensures perfect treatment every time
- • **Triple-Action Power:** Sanitizes, clarifies, and kills algae for crystal-clear water
- • **Rapid Chlorine Boost:** High 73% calcium hypochlorite content delivers fast, effective shock
- • **Nighttime Performance:** Apply at night and wait 8-10 hours for optimal results and safe swimming

## Overview

Rx Clear Mega Shock is a powerful 73% calcium hypochlorite granular pool shock that sanitizes, clarifies, and eliminates algae. Designed for professional-grade pool maintenance, it delivers a rapid chlorine boost with precise dosing (1 lb per 10,000 gallons). Best applied at night, this 6-pack offers exceptional value and ensures your pool stays sparkling clean and algae-free.

## Description

desertcart.com : Rx Clear Mega Shock | 73% Calcium Hypochlorite | Kills Algae in Swimming Pools | Works As Pool Sanitizer Clarifier and Algicide | One Pound Bags | 6 Pack : Patio, Lawn & Garden

Review: Worked for me - Works just as well as Leslie’s 73 cal hypo shock, but cheaper. I was having a problem trying to get my free chlorine level to even register on my test strips. 2lbs of this shock (mixed in a bucket 1 lb at a time) sky rocketed my free chlorine levels. My pic of the pool is a little cloudy due to the chlorine level being high right now, but I’m sure that will resolve itself over the next few days as the levels come down. It’s been crazy 90 degree hot every day around here for a couple of weeks now. The test strip pic is from today, 2 days after I put the shock in a couple of nights ago. Next week if the fc level is low, I’m going to try 1lb instead of 2, and see what happens with the increase in free chlorine levels. If u want a jolt in your free chlorine levels, this stuff works.
Review: Very good product. - Very good product, performed as advertised.

## Features

- MULTI-PURPOSE - This pool shock sanitizes, clarifies, and controls algae giving your swimming pool crystal clear water.
- INCREDIBLY STRONG - Due to its high percentage of chlorine, Mega Shock is very effective and efficient for a quick chlorine boost.
- MIX BEFORE YOU FIX - Add this powder to a bucket of water before you add it to your pool. Add a 1 lb bag per 10,000 gallons of pool water.
- BEAT THE GREEN: - Kill the algae in your swimming pool by adding 2 bags of shock per 14,000 gallons of pool water.
- WORKS BEST AT NIGHT - Maximize performance by adding this shock to your pool at night. Wait to swim 8 to 10 hours after application.
- NOTE: Cannot be sold or shipped to Maine.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B078TLMLNR |
| Best Sellers Rank | #36,737 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #163 in Swimming Pool Chlorine |
| Brand | Rx Clear |
| Customer Reviews | 4.7 4.7 out of 5 stars (640) |
| Is Discontinued By Manufacturer | No |
| Item Form | Granular |
| Item Weight | 1 pounds |
| Manufacturer | Rx Clear |
| Number of Items | 6 |
| Product Benefits | Sanitizes,Controls,Kills Algae |
| Unit Count | 96 Ounce |

## Product Details

- **Brand:** Rx Clear
- **Item Form:** Granular
- **Item Weight:** 1 Pounds
- **Number of Items:** 6
- **Product Benefits:** Sanitizes,Controls,Kills Algae

## Images

![Rx Clear Mega Shock | 73% Calcium Hypochlorite | Kills Algae in Swimming Pools | Works As Pool Sanitizer Clarifier and Algicide | One Pound Bags | 6 Pack - Image 1](https://m.media-amazon.com/images/I/71XZoZdUF4L.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: What are the ingredients in the package?**
A: Don't know but it works great in my vinyl pool. Just make sure you run your filter when you put it in the pool.

**Q: Will this suffice for water purification in emergency situations? I understand you have to make sure you get basic Pool Shock with no additives...**
A: This stuff was old and rocky and didn’t do good on my pool.

**Q: Can this be used for sanitizing drinking water in proper dilution. I have the formula but the recommended product was Ultima which is unavailable.**
A: I don't think it's a good idea, I wouldn't try it.

**Q: is product safe for vinyl pools?**
A: I use it in my vinyl pool and it works great just run your pool filter when you use it.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked for me
*by G***N on July 15, 2025*

Works just as well as Leslie’s 73 cal hypo shock, but cheaper. I was having a problem trying to get my free chlorine level to even register on my test strips. 2lbs of this shock (mixed in a bucket 1 lb at a time) sky rocketed my free chlorine levels. My pic of the pool is a little cloudy due to the chlorine level being high right now, but I’m sure that will resolve itself over the next few days as the levels come down. It’s been crazy 90 degree hot every day around here for a couple of weeks now. The test strip pic is from today, 2 days after I put the shock in a couple of nights ago. Next week if the fc level is low, I’m going to try 1lb instead of 2, and see what happens with the increase in free chlorine levels. If u want a jolt in your free chlorine levels, this stuff works.

### ⭐⭐⭐⭐⭐ Very good product.
*by P***S on October 16, 2025*

Very good product, performed as advertised.

### ⭐⭐⭐⭐⭐ 73% Cal FTW!
*by B***Y on July 13, 2025*

FINALLY! Actual chlorine that works. I was using Leslie’s Pool chlorine and Sam’s Club members mark version (not chlorine) and had so many issues with algae and cloudy water. I finally tried this product and have had crystal clear water all year even through storm season. 73% Cal is where it’s at. I wasted hundreds of dollars and tons of time dealing with algae and cloudy nasty water. This is worth its weight in gold.

## Frequently Bought Together

- Rx Clear Mega Shock | 73% Calcium Hypochlorite | Kills Algae in Swimming Pools | Works As Pool Sanitizer Clarifier and Algicide | One Pound Bags | 6 Pack
- Clorox® Pool&Spa™ Swimming Pool Algaecide and Clarifier, Prevents and Treats Pool Algae, Clears Water, 128 Fl Oz (Pack of 1)
- EASYTEST 9-Way Pool Test Strips, 140 Strips for Hot tub and Spa, Accurate Testing pH, Total Chlorine, Free Chlorine, Bromine, Alkalinity, Total Hardness, Cyanuric Acid, Salt and Copper

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-02-18*