---
product_id: 56370555
title: "The Reef Magnesium Chloride 4kg"
brand: "the reef"
price: "252 zł"
currency: PLN
in_stock: true
category: "Pet Supplies"
url: https://www.desertcart.pl/products/56370555-the-reef-magnesium-chloride-4kg
store_origin: PL
region: Poland
---

# The Reef Magnesium Chloride 4kg

**Brand:** the reef
**Price:** 252 zł
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** The Reef Magnesium Chloride 4kg by the reef
- **How much does it cost?** 252 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/56370555-the-reef-magnesium-chloride-4kg)

## Best For

- the reef enthusiasts

## Why This Product

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

## Description

Magnesium Chloride can be used to replenish magnesium levels in marine aquaria. Diluted in fresh water and added slowly to an area of high flow, 5 grams of Magnesium Chloride hexahydrate per 100L of aquarium water will raise magnesium levels by around 6ppm. Suitable for use as part of the 'Balling Method' for reef aquarium supplementation developed by Hans-Wermer Balling in Germany.

## Features

- Magnesium Chloride hexahydrate flakes MgCl2.6H2O
- Suitable for use in the popular Balling Method
- Manufactured from food grade materials
- Size: 4kg
- Also available in 1kg and 2kg sizes
- ›See more product details

## Images

![The Reef Magnesium Chloride 4kg - Image 1](https://images-na.ssl-images-amazon.com/images/I/51DXlHYrezL.jpg)
![The Reef Magnesium Chloride 4kg - Image 2](https://images-na.ssl-images-amazon.com/images/I/61L2Vy3NqTL.jpg)

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---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-04-23*