---
product_id: 724940680
title: "52040B, Swimming Pool Care Shock Ultra, 6 Pack"
brand: "ブランド: hth"
price: "40963 kr"
currency: ISK
in_stock: true
reviews_count: 5
category: "ブランド: Hth"
url: https://www.desertcart.is/products/724940680-52040b-swimming-pool-care-shock-ultra-6-pack
store_origin: IS
region: Iceland
---

# Fast-dissolving granules Visible blue action indicator Chlorine boost without CYA 52040B, Swimming Pool Care Shock Ultra, 6 Pack

**Brand:** ブランド: hth
**Price:** 40963 kr
**Availability:** ✅ In Stock

## Summary

> 💧 Shock your pool into sparkling life — clarity you can see, confidence you can feel!

## Quick Answers

- **What is this?** 52040B, Swimming Pool Care Shock Ultra, 6 Pack by ブランド: hth
- **How much does it cost?** 40963 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/724940680-52040b-swimming-pool-care-shock-ultra-6-pack)

## Best For

- ブランド: hth enthusiasts

## Why This Product

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

## Key Features

- • **Rapid Clarity Boost:** Dissolves quickly to restore crystal-clear water within hours, eliminating cloudy residue.
- • **Visible Blue Action:** Unique blue color signals active sanitization, so you know it’s working in real-time.
- • **Universal Pool Compatibility:** Safe and effective for all pool types, including vinyl liners and saltwater systems.
- • **Effortless Weekly Maintenance:** Pair with HTH 6-way test strips for easy twice-weekly water balancing and ongoing pool perfection.
- • **Chlorine Power Without Overstabilizing:** Cal-hypo formula raises chlorine levels without adding cyanuric acid, preventing chlorine lock.

## Overview

HTH 52040B Ultra Pool Shock is a powerful, fast-acting granular sanitizer designed to quickly elevate chlorine levels, eliminate bacteria, algae, and contaminants, and improve filtration without causing eye or skin irritation. Its unique visible blue action confirms active treatment, and its cal-hypo formula avoids cyanuric acid buildup, making it ideal for all pool types including saltwater and vinyl-lined pools. Sold in convenient 6-pack units, it’s the trusted choice for maintaining crystal-clear, healthy swimming water with minimal effort.

## Description

商品紹介 HTH 52040B スイミングプールケアショックウルトラ、スイミングプールケミカル、カルハイポフォーミュラ、1ポンド(6パック) 使用方法 指示に従って、プールに直接、またはスキマーを通して塗布してください。

Review: The only kind we purchase! - This is our first year having a pool. After trying several different shocks we settled on HTH Ultra Pool Shock.The product dissolves quickly and doesn’t leave behind any residue or cloudy water like some cheaper shock treatments I’ve tried in the past. Within a few hours of application, the water looks noticeably clearer, and it does a great job of eliminating that faint “chlorine smell” and any algae or bacteria growth. I also appreciate that the dosing instructions are straightforward, so there’s no guessing game when treating different pool sizes. One packet is usually enough to restore balance after a heavy swim day, rainstorm, or when the water just starts to look a little dull. It gives me peace of mind knowing that my family is swimming in clean, well-sanitized water. Overall, HTH Ultra Pool Shock is reliable, effective, and worth the price for the results you get. If you want a hassle-free way to maintain crystal-clear water, I highly recommend it.
Review: 12 pack was a good value - Worked well especially with all the hot days it seemed to control algae growth.

## Features

- 利点:このオールインワンパワーハウスプールショックを使用して、塩素レベルを上げ、バクテリア、藻類、汚れ、鱗屑を防ぎ、皮膚や目の刺激を減らし、ろ過を改善し、スイミングプールの水を素早く簡単に柔らかくします。
- 目に見えて輝かしい輝き:このカルハイポベースのフォーミュラは、シアヌル酸(CYA)を添加せずに消毒し、過剰な安定化や塩素ロックを防ぎます。
- 可視ブルーアクション:この内蔵機能により、製品が動作していることを知ることができます。
- すべてのスイミングプールに対応:この製品は、ビニール裏地のプールや海水システムを含むすべてのタイプのプールに最適です。
- HTHですべてをクリア:最良の結果を得るには、HTH 6ウェイテストストリップと一緒にスイミングプールの水を週2回テストしてバランスを取ってください。毎週使用して24時間以内にプールの問題を解決し、クリスタルの透明度を回復します。

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09R81TQBS |
| Amazon 売れ筋ランキング | DIY・工具・ガーデン - 638,087位 ( DIY・工具・ガーデンの売れ筋ランキングを見る ) プール・温水浴槽用塩素 - 65位 |
| UPC | 073187520401 |
| おすすめ度 | 5つ星のうち4.7 582 レビュー |
| パック数 | 6 |
| パッケージサイズ名 | 6個パック。 |
| パッケージ内に含まれる商品の数 | 1 |
| ブランド | HTH |
| ブランド名 | HTH |
| メーカー名 | Innovative Water Care |
| メーカー型番 | 52040B |
| ユニット数 | 6.0 個 |
| 同梱商品 | HTH 52040B スイミングプールケアショックウルトラ |
| 品番・型番 | 52040B |
| 商品の利点 | 殺菌作用 |
| 商品の形状 | 顆粒 |
| 商品の重量 | 6.3 ポンド |
| 商品特長 | 殺菌作用 |
| 商品種別 | HTH 52040B スイミングプールケアショックウルトラ、スイミングプールケミカル、カルハイポフォーミュラ、1ポンド(6パック) |

## Product Details

- **Brand:** HTH
- **Item Weight:** 2.86 kg
- **Item Form:** Granular
- **Product Benefits:** Kills Bacteria
- **UPC:** 073187520401

## Images

![52040B, Swimming Pool Care Shock Ultra, 6 Pack - Image 1](https://m.media-amazon.com/images/I/81aKILdYRbL.jpg)

## Questions & Answers

**Q: Can this replace weekly chlorine?**
A: This is a sanitizer that is used as weekly shock or your regular sanitizer maintenance.  The amount you use for weekly shock and the amount for maintenance is different based upon the pool water volume.  Ideally, this is used for Shock but we can help with regular maintenance dose if you choose to not use a tablet  in your skimmer.  Please consider calling our Consumer Engagement Team for more precise recommendations and dosing details.  We're available M-F, 9 AM - 7 PM at 866-484-7665.

**Q: What is the percentage of available chlorine?**
A: This product has 56.44% available chlorine.

**Q: How long do you have to wait after adding shock before you can swim?**
A: The general rule is to wait at least an hour per pound of granular product, to allow it to dissolve and dilute properly. Before you enter the pool, make sure to test and that the chlorine level is between 1-4 ppm (and NOT ABOVE 5 ppm) for the safest swimming.

**Q: 1 bag treats how many gallons water**
A: We are the manufacturer of HTH® Pool Care Shock Ultra and one of our 1 lb. bags treats 13,500 gallons of swimming pool water. If you have any more questions just give us a call at 866-484-7665.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The only kind we purchase!
*by T***I on 2025年9月17日にアメリカ合衆国でレビュー済み*

This is our first year having a pool. After trying several different shocks we settled on HTH Ultra Pool Shock.The product dissolves quickly and doesn’t leave behind any residue or cloudy water like some cheaper shock treatments I’ve tried in the past. Within a few hours of application, the water looks noticeably clearer, and it does a great job of eliminating that faint “chlorine smell” and any algae or bacteria growth. I also appreciate that the dosing instructions are straightforward, so there’s no guessing game when treating different pool sizes. One packet is usually enough to restore balance after a heavy swim day, rainstorm, or when the water just starts to look a little dull. It gives me peace of mind knowing that my family is swimming in clean, well-sanitized water. Overall, HTH Ultra Pool Shock is reliable, effective, and worth the price for the results you get. If you want a hassle-free way to maintain crystal-clear water, I highly recommend it.

### ⭐⭐⭐⭐⭐ 12 pack was a good value
*by E***E on 2026年7月21日にアメリカ合衆国でレビュー済み*

Worked well especially with all the hot days it seemed to control algae growth.

### ⭐⭐⭐⭐⭐ Shocked
*by M***K on 2026年5月24日にアメリカ合衆国でレビュー済み*

Works well.

## Frequently Bought Together

- HTH 52040B Swimming Pool Care Shock Ultra, Swimming Pool Chemical, Cal Hypo Formula, 1lb (6 Pack)
- HTH 67067 Swimming Pool Care Clarifier Advanced - Crystal Clear Water in 24 Hours
- HTH 52038 Swimming Pool Care Green to Blue, Advanced Shock System, 2-Step Swimming Pool Care Solution, 1 Kit

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---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-10-01*