---
product_id: 309783944
title: "Calcium Hardness Increaser (1 Gallon) Calcium Chloride Powder for Pools & Hot Tubs"
brand: "quality producer direct"
price: "VT25330"
currency: VUV
in_stock: true
reviews_count: 8
category: "Quality Producer Direct"
url: https://www.desertcart.vu/products/309783944-calcium-hardness-increaser-1-gallon-calcium-chloride-powder-for-pools
store_origin: VU
region: Vanuatu
---

# Lab-tested & certified purity 3.48 kg concentrated powder Made in the USA quality Calcium Hardness Increaser (1 Gallon) Calcium Chloride Powder for Pools & Hot Tubs

**Brand:** quality producer direct
**Price:** VT25330
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your pool’s health with precision and power!

## Quick Answers

- **What is this?** Calcium Hardness Increaser (1 Gallon) Calcium Chloride Powder for Pools & Hot Tubs by quality producer direct
- **How much does it cost?** VT25330 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/309783944-calcium-hardness-increaser-1-gallon-calcium-chloride-powder-for-pools)

## Best For

- quality producer direct enthusiasts

## Why This Product

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

## Key Features

- • **Corrosion Defense:** Protect your pool and hot tub infrastructure by preventing metal corrosion with balanced calcium levels.
- • **Proudly American Made:** Manufactured in the USA, supporting local industry and guaranteeing premium standards.
- • **Concentrated Efficiency:** Highly concentrated granules mean a little goes a long way—maximize value and minimize effort.
- • **Precision Hardness Boost:** Add 2 oz per 1,000 gallons to raise calcium hardness by 2 ppm—exact control for crystal-clear water.
- • **Trusted Quality Assurance:** Lab-tested and certified to ensure consistent performance and safety every time you use it.

## Overview

This 1-gallon Calcium Chloride Powder is a lab-tested, USA-made solution designed to increase calcium hardness in pools and hot tubs, preventing corrosion and maintaining water balance with precise dosing for lasting clarity and protection.

## Description

Calcium Chloride Anhydrous for Pool & Hot Tubs. Use hand and eye protection when handling. Place water in a mixing bucket, then add in Calcium Chloride. Do NOT put Calcium Chloride in the bucket first. To increase Calcium Hardness by 2 ppm, add 2 oz of Calcium Chloride for every 1,000 gallons. See label for instructions and warnings.

Review: Nice and exactly as advertised - Nice and exactly as advertised
Review: Perfect for hot tubs - The granules are very concentrated and a little goes far.

## Features

- Calcium Chloride Anhydrous Powder Increases Total Hardness of Pool Water
- Used to Prevent Corrosion in Pools & Hot Tubs
- Great Value: 1 Gallon of Calcium Chloride Powder
- Lab-Tested & Certified
- Manufactured in the USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08XC7VTB2 |
| Best Sellers Rank | #133,897 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #176 in Swimming Pool Balancers |
| Brand Name | Quality Producer Direct |
| Customer Reviews | 4.4 4.4 out of 5 stars (219) |
| Item Form | Powder |
| Item Weight | 3.48 Kilograms |
| Manufacturer | Quality Producer Direct |
| Product Benefits | Prevents corrosion in pools and hot tubs by increasing the total hardness of pool water |
| UPC | 195507003873 |
| Unit Count | 112.0 Ounce |

## Product Details

- **Brand:** Quality Producer Direct
- **Item Form:** Powder
- **Item Weight:** 3.48 Kilograms
- **Product Benefits:** Prevents corrosion in pools and hot tubs by increasing the total hardness of pool water
- **UPC:** 195507003873

## Images

![Calcium Hardness Increaser (1 Gallon) Calcium Chloride Powder for Pools & Hot Tubs - Image 1](https://m.media-amazon.com/images/I/61WyIX+qxhL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice and exactly as advertised
*by D***S on June 26, 2025*

Nice and exactly as advertised

### ⭐⭐⭐⭐⭐ Perfect for hot tubs
*by J***S on August 20, 2023*

The granules are very concentrated and a little goes far.

### ⭐⭐⭐⭐⭐ good product
*by E***D on August 9, 2021*

The 1 gallon size raised hardness of 4000 gallons from 0 to 110 in my pool. Dissolves quickly and well.

## Frequently Bought Together

- Quality Producer Direct Calcium Hardness Increaser (1 Gallon) Calcium Chloride Powder for Pools & Hot Tubs
- Leisure Time E5 Spa 56 Chlorinating Granules for Spas and Hot Tubs, 5-Pounds
- EASYTEST 7-Way Pool Test Strips, 150 Strips Water Chemical Testing for Hot tub and Spa, Accurate Test Bromine, Total Alkalinity, pH, Free Chlorine, Total Hardness, Cyanuric Acid, and Total Chlorine

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**Shop now:** [https://www.desertcart.vu/products/309783944-calcium-hardness-increaser-1-gallon-calcium-chloride-powder-for-pools](https://www.desertcart.vu/products/309783944-calcium-hardness-increaser-1-gallon-calcium-chloride-powder-for-pools)

---

*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-04*