---
product_id: 671402369
title: "Leslie's Hardness Plus Pool Calcium Hardness Increaser, 8 Pounds LPM 18779"
brand: "leslie's"
price: "AR$239269"
currency: ARS
in_stock: true
reviews_count: 4
category: "Leslie's"
url: https://www.desertcart.com.ar/products/671402369-leslies-hardness-plus-pool-calcium-hardness-increaser-8-pounds-lpm
store_origin: AR
region: Argentina
---

# Boosts calcium hardness by 10 ppm per 1.25 lbs Fast-dissolving granular formula Prevents pool & equipment corrosion Leslie's Hardness Plus Pool Calcium Hardness Increaser, 8 Pounds LPM 18779

**Brand:** leslie's
**Price:** AR$239269
**Availability:** ✅ In Stock

## Summary

> 💦 Keep your pool pristine and protected—because your summer deserves perfection!

## Quick Answers

- **What is this?** Leslie's Hardness Plus Pool Calcium Hardness Increaser, 8 Pounds LPM 18779 by leslie's
- **How much does it cost?** AR$239269 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/671402369-leslies-hardness-plus-pool-calcium-hardness-increaser-8-pounds-lpm)

## Best For

- leslie's enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Quality:** Leslie’s brand reliability with 4.5-star customer satisfaction
- • **Optimized Dosage:** 8 lbs treats large pools efficiently, saving time and money
- • **Corrosion Defense:** Protect your pool and gear from costly soft water damage
- • **Effortless Application:** Granular formula dissolves quickly for hassle-free maintenance
- • **Precision Calcium Control:** Easily raise calcium hardness for crystal-clear water

## Overview

Leslie's Hardness Plus is an 8-pound granular calcium chloride formula designed to increase pool calcium hardness by 10 ppm per 1.25 lbs in 10,000 gallons. It prevents corrosion caused by soft water, dissolves quickly for easy use, and is highly rated for maintaining balanced, crystal-clear pool water.

## Description

desertcart.com : Leslie's Hardness Plus Pool Calcium Hardness Increaser, 8 Pounds LPM 18779 : Patio, Lawn & Garden

Review: Works great I have bad water from the tap - Worked great got my pool In check and had a 100 score on water test afterwards
Review: Great product. - Solid product at a fair price. Dissolves easily when mixed and applied to our pool.

## Features

- Calcium hardness increaser
- Calcium Chloride
- Helps prevent damage to pool and equipment caused by soft water
- Increases Calcium Hardness by 10 ppm per 1-1/4 lbs. in 10,000 gallons of water.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DB759K6X |
| Best Sellers Rank | #93,311 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #208 in Swimming Pool Balancers |
| Brand | Leslie's |
| Brand Name | Leslie's |
| Customer Reviews | 4.5 out of 5 stars 31 Reviews |
| Item Form | Granular |
| Item Weight | 8.8 pounds |
| Manufacturer | LPM Manufacturing |
| Manufacturer Part Number | LPM 18779 |
| Model Number | LPM 18779 |
| Number of Items | 1 |
| Product Benefits | Prevents Corrosion |
| UPC | 803354187799 |
| Unit Count | 128 Ounce |

## Images

![Leslie's Hardness Plus Pool Calcium Hardness Increaser, 8 Pounds LPM 18779 - Image 1](https://m.media-amazon.com/images/I/61-WUShGoPL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great I have bad water from the tap
*by C***S on July 4, 2026*

Worked great got my pool In check and had a 100 score on water test afterwards

### ⭐⭐⭐⭐⭐ Great product.
*by K***E on June 4, 2026*

Solid product at a fair price. Dissolves easily when mixed and applied to our pool.

### ⭐⭐⭐⭐⭐ Exceeded Expectation
*by K***F on May 12, 2026*

Item came just as expected, only a day early!!! Thanks!

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**Shop now:** [https://www.desertcart.com.ar/products/671402369-leslies-hardness-plus-pool-calcium-hardness-increaser-8-pounds-lpm](https://www.desertcart.com.ar/products/671402369-leslies-hardness-plus-pool-calcium-hardness-increaser-8-pounds-lpm)

---

*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-09-12*