---
product_id: 522917306
title: "HTH 52038 Swimming Pool Care Green to Blue, Advanced Shock System, 2-Step Swimming Pool Care Solution, 1 Kit"
brand: "hth"
price: "908 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Hth"
url: https://www.desertcart.dk/products/522917306-hth-52038-swimming-pool-care-green-to-blue-advanced-shock
store_origin: DK
region: Denmark
---

# Transforms green to blue in 24h Cal Hypo shock with no CYA buildup Flocculant drops particles for easy vacuum HTH 52038 Swimming Pool Care Green to Blue, Advanced Shock System, 2-Step Swimming Pool Care Solution, 1 Kit

**Brand:** hth
**Price:** 908 kr
**Availability:** ✅ In Stock

## Summary

> 💧 Turn your pool from swamp to sparkle—fast, flawless, and fuss-free!

## Quick Answers

- **What is this?** HTH 52038 Swimming Pool Care Green to Blue, Advanced Shock System, 2-Step Swimming Pool Care Solution, 1 Kit by hth
- **How much does it cost?** 908 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/522917306-hth-52038-swimming-pool-care-green-to-blue-advanced-shock)

## 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

- • **Rapid Algae Eradication:** Clear your pool’s green nightmare in just 24 hours—because waiting is so last season.
- • **Dual-Action 2-Step System:** Shock and flocculate for a deep clean that leaves your pool sparkling and debris-free.
- • **Cyanuric Acid-Free Formula:** Avoid chlorine lock and overstabilization with a smart shock that keeps your water balanced and fresh.
- • **Pro-Level Pool Maintenance:** Pair with HTH 6-Way Test Strips for twice-weekly water checks—because your pool deserves expert care.
- • **Universal Pool Compatibility:** Perfect for all pool types, especially vinyl-lined pools that deserve to stay vibrant and fade-free.

## Overview

The HTH 2-Step Green to Blue Swimming Pool Care Kit is a powerful, easy-to-use solution designed to eliminate severe algae blooms and restore crystal-clear water within 24 hours. Featuring a calcium hypochlorite shock that avoids cyanuric acid buildup and a potent flocculant for easy debris removal, this system is compatible with all vacuum-to-waste pools, including vinyl-lined ones. For optimal results, it’s recommended to use alongside HTH 6-Way Test Strips to maintain balanced water chemistry, ensuring your pool stays brilliantly clear and ready for relaxation.

## Description

The HTH 2-Step Green to Blue Swimming Pool System is the perfect solution for fighting a severe algae bloom and transforming your swimming pool water from green to blue in just 24 hours. This easy-to-use system includes Pack I, which is a strong algae-fighting pool shock with Cal Hypo, and Pack II, a powerful flocculant that drops particles to the floor for easy vacuuming. The Cal Hypo based formula transforms water from green to blue within 24 hours without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock, giving you a visibly brilliant sparkle. This product is effective for all pool types that can vacuum to waste, making it ideal for vinyl-lined pools that won't fade liners. For best results, use with HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly. With the HTH 2-Step Green to Blue Swimming Pool System, you're all clear for a summer full of fun, relaxation, and crystal clear swimming pool water.

Review: Clean the leaves out before you start - This is my second year using Green To Blue. I was confused about how to use the product the first year. When I was finished it all made sense to me so this year I was much more successful cleaning my pool. I don’t have a pool cover so this is a three step process for me instead of two steps. 1. Prep you pool. By this I mean take your skimmer and clean as much debris, sunken leaves and such, off the bottom as you can. I had a ton of leaves hidden in that green, murky mess. I knew where the leaves collected and swept every day for a week. Because of the murk I never knew what I was going to drag out. The less debris you have the better this product woks. 2. Use the correct amount of shock according to directions on the box and bag. Filter your pool. 3. After the shock is thoroughly mixed in, pour in the clarifier. Recirculate without filtering for an hour. Let it sit still overnight to allow all the particulates to settle to the bottom of the pool. Set the pump to discharge and vacuum your pool. Mine was so bad I had to shock the pool a second time. The pool was cleaner but not clean. I could see all the settled debris and swept the floor again. The fewer leaves in the pool the better the product works. Repeat shocking, vacuuming, and debris removal until your pool is clean. If this seems excessive that is a reflection of the condition of my pool not the product. I think I could have walked in that water. It sparkles now. Oh, the product does not turn your water blue. At least it didn’t turn my water blue.
Review: Good product - Great product for the pool. It's really help keep water clean

## Features

- BENEFITS: Fight a severe algae bloom and transform your swimming pool water from green to blue in 24 hours with this easy-to-use system
- EASY TO USE: Simple 2-step system; Pack I is a strong algae-fighting pool shock with Cal Hypo; Pack II is a powerful flocculant that drops particles to floor for easy vacuuming
- VISIBLY BRILLIANT SPARKLE: This Cal Hypo based formula transforms water from green to blue within 24 hours without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock
- COMPATIBLE WITH ALL SWIMMING POOLS: This product is effective for all pool types that can vacuum to waste; It’s ideal for vinyl-lined pools and won't fade liners
- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09R82PSPH |
| Best Sellers Rank | #1,207 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #36 in Swimming Pool Chlorine |
| Brand Name | HTH |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,775) |
| Included Components | HTH 52038 Swimming Pool Care Green to Blue |
| Item Form | Powder |
| Item Type Name | 2-Step Swimming Pool Care Solution |
| Item Weight | 7.2 Pounds |
| Manufacturer | Innovative Water Care |
| Manufacturer Warranty Description | Warranty |
| Product Benefits | Controls Algae |
| UPC | 073187520388 |
| Unit Count | 115.2 Ounce |

## Product Details

- **Brand:** HTH
- **Item Form:** Powder
- **Item Weight:** 7.2 Pounds
- **Product Benefits:** Controls Algae
- **UPC:** 073187520388

## Images

![HTH 52038 Swimming Pool Care Green to Blue, Advanced Shock System, 2-Step Swimming Pool Care Solution, 1 Kit - Image 1](https://m.media-amazon.com/images/I/81A38pG1ImL.jpg)

## Available Options

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

## Questions & Answers

**Q: I have a vinal pool with 2700 gal of water. Will this kit work for me?**
A: Great question.  HTH Pool Care Green to Blue Advanced is a great product but it is ONLY for swimming pools that have the capability to "VACUUM TO WASTE" which means bypassing the filter.  Generally, pools that use a cartridge filter do not have this capability and that is usually the case for smaller pools like yours.  Just to clarify, Green to Blue is a "system" which includes 4 packs of shock and 2 packs of flocculant.  It's the flocculant that would cause some trouble if not able to vacuum to waste.  The floc causes all the dead debris to drop to the floor of the pool, and then needs to be vacuumed to waste.  So please make sure about the "vacuum to waste" part before using this product.  IF you have other questions or need assistance, please feel free to reach out to our Consumer Engagement Team at 866-484-7665. We're Here To Help, M-F, 9 AM - 7 PM (ET).

**Q: Does this new package of green to blue only come with 1 pack of each? The old package we use to buy had 3 of each in it.**
A: Thanks for this question.  As the manufacturer of this product, this kit should come with 4 bags of shock and 2 bags of flocculant. Total 6 bags.
If you did not receive it with all contents, please contact the vendor/seller for a refund and replacement.

**Q: Do I have to buy two boxes for pool with 25000 gals**
A: We are the manufacturers of HTH® Pool Care Green to Blue Advanced Shock System. One box treats a pool up to 20,000 gallons of water. So for 25,000 gallons you would use one entire box and part of another box, so 2 kits would be best. If you have questions about this system, please let us know at 866-484-7665.

**Q: Max time to vacume ? Can you wait longer then 24 hour?**
A: We are the manufacturer of HTH® Pool Care Green to Blue Advanced, when using this product, it may take 12- 24 hours for the step 2, flocculant, to settle to the bottom of the pool. We recommend vacuuming it to waste as soon as possible. Also, before using make sure your filter has a waste setting so you can vacuum out the residue without going through the filter media, residue and water go out the backwash hose. To find out if this product is right for you just give us a call, 866-484-7665.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Clean the leaves out before you start
*by D***S on May 19, 2025*

This is my second year using Green To Blue. I was confused about how to use the product the first year. When I was finished it all made sense to me so this year I was much more successful cleaning my pool. I don’t have a pool cover so this is a three step process for me instead of two steps. 1. Prep you pool. By this I mean take your skimmer and clean as much debris, sunken leaves and such, off the bottom as you can. I had a ton of leaves hidden in that green, murky mess. I knew where the leaves collected and swept every day for a week. Because of the murk I never knew what I was going to drag out. The less debris you have the better this product woks. 2. Use the correct amount of shock according to directions on the box and bag. Filter your pool. 3. After the shock is thoroughly mixed in, pour in the clarifier. Recirculate without filtering for an hour. Let it sit still overnight to allow all the particulates to settle to the bottom of the pool. Set the pump to discharge and vacuum your pool. Mine was so bad I had to shock the pool a second time. The pool was cleaner but not clean. I could see all the settled debris and swept the floor again. The fewer leaves in the pool the better the product works. Repeat shocking, vacuuming, and debris removal until your pool is clean. If this seems excessive that is a reflection of the condition of my pool not the product. I think I could have walked in that water. It sparkles now. Oh, the product does not turn your water blue. At least it didn’t turn my water blue.

### ⭐⭐⭐⭐⭐ Good product
*by H***A on March 20, 2026*

Great product for the pool. It's really help keep water clean

### ⭐⭐⭐⭐⭐ Works great from green to blue
*by E***A on March 17, 2026*

Works great . The value is a little expensive but works that’s the important thing to me. The algae all the green from my pool dias appeared.

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-04-23*