---
product_id: 181285259
title: "Robelle 25-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser"
brand: "robelle"
price: "8050122₫"
currency: VND
in_stock: true
reviews_count: 8
category: "Robelle"
url: https://www.desertcart.vn/products/181285259-robelle-25-pounds-premium-pool-calcium-up-calcium-hardness-increaser
store_origin: VN
region: Vietnam
---

# Rapid hardness boost Precise ppm control Prevents corrosion & etching Robelle 25-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser

**Brand:** robelle
**Price:** 8050122₫
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your pool’s perfection—because your oasis deserves the best!

## Quick Answers

- **What is this?** Robelle 25-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser by robelle
- **How much does it cost?** 8050122₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/181285259-robelle-25-pounds-premium-pool-calcium-up-calcium-hardness-increaser)

## Best For

- robelle enthusiasts

## Why This Product

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

## Key Features

- • **Precision Dosing:** 8 oz raises hardness by 10 ppm per 5,000 gallons—easy to measure, easy to maintain.
- • **Corrosion Defense:** Protects your pool surfaces from costly staining, etching, and damage.
- • **Instant Calcium Power:** Rapidly elevates pool hardness to ideal 200-400 ppm range for crystal-clear water.
- • **Cost-Effective Quality:** Premium formula at a fraction of pool store prices—trusted by 520+ happy pool pros.
- • **Universal Pool Compatibility:** Perfect for vinyl, tile, fiberglass, and painted pools—tailored protection for every surface.

## Overview

Robelle 25-Pounds Premium Pool Calcium Up is a fast-acting calcium chloride formula designed to boost your pool’s calcium hardness to the optimal 200-400 ppm range. It prevents corrosion and surface etching, ensuring long-lasting pool integrity. Easy to dose with 8 ounces raising hardness by 10 ppm per 5,000 gallons, it’s compatible with all pool types and offers premium quality at a budget-friendly price.

## Description

This is a dry granular product that increases the total hardness in pool water to the recommended range.Test for calcium hardness with a reliable test kit. The desired range for calcium hardness is as follows: Vinyl Pools: 200-300 ppm, Tile and Exposed Aggregate Pools: 200-400 ppm, Marcite, Fiberglass or Painted Pools: 250-400 ppm. If the calcium hardness tests less than the desired range, add this product according to the included chart. Place this product into a plastic bucket already filled with swimming pool water. Do this in a ration of up to 2 pounds of product per approximate 5-gallon bucket of water. Slowly pour this solution around the perimeter of the swimming pool while the circulating system is operating. In a 10,000 gallon pool, do not add more than 10 pounds of this product per 2 hour period.

Review: Good quality - Good quality - much cheaper than local pool supply
Review: Cheaper than pool store, worth it. - Cost effective, much cheaper than from the pool store, and got our water to where it needed to be!

## Features

- Calcium chloride for pools
- Rapidly increases total hardness
- Helps prevent corrosion or etching of pools
- Ideal calcium hardness range 200 - 400 ppm
- 8 ounces raises calcium hardness level 10 ppm per 5,000 gallons of water
- Prevents the staining or etching of your pool's surface
- Low calcium hardness level can cause water issues

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #29,022 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #85 in Swimming Pool Balancers |
| Customer Reviews | 4.6 out of 5 stars 520 Reviews |

## Product Details

- **Brand:** Robelle
- **Item Weight:** 25 Pounds
- **Item Form:** Granular
- **Product Benefits:** Calcium Increaser
- **UPC:** 034261282592

## Images

![Robelle 25-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser - Image 1](https://m.media-amazon.com/images/I/51grRTcWHfL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality
*by A***R on December 20, 2025*

Good quality - much cheaper than local pool supply

### ⭐⭐⭐⭐⭐ Cheaper than pool store, worth it.
*by D***O on December 4, 2025*

Cost effective, much cheaper than from the pool store, and got our water to where it needed to be!

### ⭐⭐⭐⭐⭐ Pool necessity at good value and shipped quickly
*by A***R on December 5, 2025*

This is a basic commodity item required for most pools. Not much product difference between brands and suppliers. This quantity from this supplier is handy and a good value.

## Frequently Bought Together

- Robelle 25-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser
- Pool Mate 7-Pounds Premium Pool Stabilizer and Conditioner, Concentrated Cyanuric Acid for Pools, Helps Chlorine Last Longer
- Natural Chemistry Phosfree, 3-Liter

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.vn/products/181285259-robelle-25-pounds-premium-pool-calcium-up-calcium-hardness-increaser](https://www.desertcart.vn/products/181285259-robelle-25-pounds-premium-pool-calcium-up-calcium-hardness-increaser)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-12*