---
product_id: 549409313
title: "HTH Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced"
brand: "hth"
price: "€ 41.11"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/549409313-hth-pool-shock-cal-hypo-formula-swimming-pool-care-1lb
store_origin: SK
region: Slovakia
---

# Fast-dissolving 4-in-1 formula Restores crystal-clear water in 24 hours Kills 90% of pool bacteria & algae HTH Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced

**Brand:** hth
**Price:** € 41.11
**Availability:** ✅ In Stock

## Summary

> 💦 Shock Your Pool Into Crystal Clarity—Fast, Fresh, Flawless!

## Quick Answers

- **What is this?** HTH Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced by hth
- **How much does it cost?** € 41.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/549409313-hth-pool-shock-cal-hypo-formula-swimming-pool-care-1lb)

## Best For

- hth enthusiasts

## Why This Product

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

## Key Features

- • **Test & Triumph:** Pair with HTH 6-Way Test Strips for precise water balance and unbeatable pool care twice a week.
- • **No Chlorine Lock:** Cal Hypo formula avoids cyanuric acid buildup, preventing overstabilization and keeping your pool balanced.
- • **4-in-1 Powerhouse:** Sanitizes, kills bacteria & algae, reduces chlorine odor, and soothes irritation—all in one fast-acting formula.
- • **Crystal Clear Confidence:** Experience sparkling pool water that’s ready for cannonballs in just 24 hours.
- • **Universal Pool Compatibility:** Safe and effective for all pool types, including vinyl-lined and saltwater systems—no pool left behind.

## Overview

HTH Pool Shock Cal Hypo Formula is a fast-dissolving, multi-functional 4-in-1 powder treatment that kills bacteria and algae, reduces chlorine odor and irritation, and restores crystal-clear water within 24 hours. Compatible with all pool types, it prevents chlorine lock by avoiding cyanuric acid buildup, ensuring optimal pool health and sparkling results every week.

## Description

HTH Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced

## Features

- The information below is per-pack only
- BENEFITS: Stay all clear for cannonballs; This fast-dissolving, convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity
- FEATURES: Multi-functional shock treatment for weekly use to solve 90% of pool water problems within 24 hours and restore crystal clarity
- VISIBLY BRILLIANT SPARKLE: This Cal Hypo based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock
- COMPATIBLE WITH ALL SWIMMING POOLS: This product is great for all pool types including vinyl-lined pools and saltwater systems
- YOU'RE ALL CLEAR WITH HTH: For best results, use with HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly

## Images

![HTH Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced - Image 1](https://m.media-amazon.com/images/I/81CaNsCjrUL.jpg)
![HTH Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced - Image 2](https://m.media-amazon.com/images/I/81D52i65XoL.jpg)
![HTH Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced - Image 3](https://m.media-amazon.com/images/I/71sX3WORZLL.jpg)
![HTH Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced - Image 4](https://m.media-amazon.com/images/I/81HQK37OIPL.jpg)
![HTH Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced - Image 5](https://m.media-amazon.com/images/I/712ryct1DsL.jpg)

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**Shop now:** [https://www.desertcart.sk/products/549409313-hth-pool-shock-cal-hypo-formula-swimming-pool-care-1lb](https://www.desertcart.sk/products/549409313-hth-pool-shock-cal-hypo-formula-swimming-pool-care-1lb)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-26*