---
product_id: 60035165
title: "Red Sea Reef Foundation C Magnesium (Mg) Supplement, 1000ml - Maintains Magnesium Balance for Healthy Corals in Marine & Reef Aquariums"
brand: "red sea"
price: "118.56 DT"
currency: TND
in_stock: false
reviews_count: 9
url: https://www.desertcart.tn/products/60035165-red-sea-reef-foundation-c-magnesium-mg-supplement-1000ml-maintains
store_origin: TN
region: Tunisia
---

# 1000 ml liquid for precise dosing 1 ml raises Mg by 1 ppm/100L Optimizes coral skeleton formation Red Sea Reef Foundation C Magnesium (Mg) Supplement, 1000ml - Maintains Magnesium Balance for Healthy Corals in Marine & Reef Aquariums

**Brand:** red sea
**Price:** 118.56 DT
**Availability:** ❌ Out of Stock

## Summary

> 🪸 Elevate your reef’s glow with precision magnesium magic!

## Quick Answers

- **What is this?** Red Sea Reef Foundation C Magnesium (Mg) Supplement, 1000ml - Maintains Magnesium Balance for Healthy Corals in Marine & Reef Aquariums by red sea
- **How much does it cost?** 118.56 DT with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/60035165-red-sea-reef-foundation-c-magnesium-mg-supplement-1000ml-maintains)

## Best For

- red sea enthusiasts

## Why This Product

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

## Key Features

- • **Precision Magnesium Boost:** Easily raise Mg levels by 1 ppm per ml per 100L for perfect reef balance
- • **Trusted by Reef Enthusiasts:** Highly rated with 4.8 stars and a proven track record in marine aquariums
- • **Complete Reef Care Integration:** Works seamlessly with Reef Foundation A & B for holistic coral health
- • **Liquid Formula for Fast Absorption:** Quickly stabilizes magnesium levels to support vibrant coral growth
- • **Scientifically Backed Coral Support:** Formulated to enhance natural coral skeleton formation and resilience

## Overview

Red Sea Reef Foundation C is a 1000ml liquid magnesium supplement designed to maintain optimal magnesium levels in marine and reef aquariums. Each milliliter raises magnesium by 1 ppm per 100 liters, supporting balanced coral skeleton formation. It integrates with Red Sea’s Reef Foundation A and B for comprehensive reef care, ensuring vibrant, healthy corals. Trusted by hobbyists with a 4.8-star rating, this supplement is essential for professional-grade reef maintenance.

## Description

desertcart.com : Red Sea Reef Foundation C Magnesium (Mg) Supplement, 1000ml - Maintains Magnesium Balance for Healthy Corals in Marine & Reef Aquariums : Pet Supplies

Review: Love redsea - My opinion but Red Sea never lets you down there awesome but pricey
Review: Works - Works quick

## Features

- Reef Foundation C is a magnesium complex for balanced formation of coral skeletons. It contains blended salts of Magnesium and is part of Red Sea's complete Reef Care program. For best results dose according to a measured uptake of magnesium and in conjunction with Reef Foundation A and Reef Foundation B.
- Liquid. 1 liter.
- Concentration: 1 ml will raise the Mg level of 100 liters (25gal) by 1 ppm
- For proper use of this product you may want to use the Red Sea Magnesium Pro Aquarium Test Kit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0798TPJ2Z |
| Allergen Information | Almonds Free |
| Best Sellers Rank | #139,049 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,229 in Aquarium Water Treatments |
| Brand | Red Sea |
| Brand Name | Red Sea |
| Customer Reviews | 4.8 out of 5 stars 265 Reviews |
| Global Trade Identification Number | 00730773220342 |
| Item Form | Liquid |
| Item Type Name | aquarium treatments |
| Item Weight | 3.3 pounds |
| Liquid Volume | 1000 ml |
| Manufacturer | Red Sea |
| Manufacturer Part Number | 730773220342 |
| Model Number | 730773220342 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pet Type | Fish |
| Target Species | Coral |
| UPC | 730773220342 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Red Sea
- **Item Form:** Liquid
- **Item Weight:** 3.3 pounds
- **Liquid Volume:** 1000 ml
- **Number of Packs:** 1

## Images

![Red Sea Reef Foundation C Magnesium (Mg) Supplement, 1000ml - Maintains Magnesium Balance for Healthy Corals in Marine & Reef Aquariums - Image 1](https://m.media-amazon.com/images/I/71XcawfQiaL.jpg)
![Red Sea Reef Foundation C Magnesium (Mg) Supplement, 1000ml - Maintains Magnesium Balance for Healthy Corals in Marine & Reef Aquariums - Image 2](https://m.media-amazon.com/images/I/61OzcSMGFHL.jpg)
![Red Sea Reef Foundation C Magnesium (Mg) Supplement, 1000ml - Maintains Magnesium Balance for Healthy Corals in Marine & Reef Aquariums - Image 3](https://m.media-amazon.com/images/I/81wICs0grEL.jpg)
![Red Sea Reef Foundation C Magnesium (Mg) Supplement, 1000ml - Maintains Magnesium Balance for Healthy Corals in Marine & Reef Aquariums - Image 4](https://m.media-amazon.com/images/I/51KOmTDh00L.jpg)
![Red Sea Reef Foundation C Magnesium (Mg) Supplement, 1000ml - Maintains Magnesium Balance for Healthy Corals in Marine & Reef Aquariums - Image 5](https://m.media-amazon.com/images/I/71plVaLV2mL.jpg)

## Questions & Answers

**Q: Anyone using this with good success? how often are you adding magnesium? i have a 150 gallon reef tank mostly lps**
A: I have had great success with this product. I dose 8ml a day in my 250g tank. I use this product because it is magnesium chloride.  Other products are magnesium sulfate or sulfite and I already have too many issues with excess sulfur.  For me, it’s been a great product

## Customer Reviews

### ⭐⭐⭐⭐⭐ Love redsea
*by M***O on July 20, 2026*

My opinion but Red Sea never lets you down there awesome but pricey

### ⭐⭐⭐⭐⭐ Works
*by E***D on July 16, 2026*

Works quick

### ⭐⭐⭐⭐⭐ Produce Helps Keep Level Consistent
*by B***E on April 12, 2026*

Definitely a plus for my red tank in my dose.

## Frequently Bought Together

- Red Sea Reef Foundation C Magnesium (Mg) Supplement, 1000ml - Maintains Magnesium Balance for Healthy Corals in Marine & Reef Aquariums
- Red Sea Reef Foundation B Alkalinity (KH) Supplement, 1000ml - Boosts Carbonate Levels for Strong Coral Skeletons in Reef & Marine Aquariums
- Red Sea Reef Energy Plus 1000ml (AB+) All in One Coral Food for Saltwater Aquarium Marine Reef Tanks | Food for Soft, LPS, SPS, and Non-Photosynthetic Corals

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**Shop now:** [https://www.desertcart.tn/products/60035165-red-sea-reef-foundation-c-magnesium-mg-supplement-1000ml-maintains](https://www.desertcart.tn/products/60035165-red-sea-reef-foundation-c-magnesium-mg-supplement-1000ml-maintains)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-23*