Red Sea Reef Foundations C (Mg) — 500 mL / 1 L / 5 L

Red Sea Reef Foundations C (Mg) — 500 mL / 1 L / 5 L

Overview

Stabilize magnesium (Mg) to keep calcium and alkalinity in balance and support strong coral growth. Reef Foundations C is a concentrated magnesium supplement designed for daily/weekly dosing in mixed and SPS/LPS systems. Use alongside Foundations A (Calcium/Sr) and B (Alkalinity/KH) for a complete, test-driven foundation routine.

Key Features

• Magnesium Support – Restores Mg consumed during calcification for steadier reef chemistry.

• Balances Ca & KH – Proper Mg levels help prevent precipitation and parameter drift.

• Doser-Ready Liquid – Clear solution suitable for manual dosing or peristaltic pumps.

• Scalable Sizes – Available in 500 mL, 1 L, and 5 L for nano to large systems.

• Reef-Safe Formula – Suitable for softies, LPS, and SPS when dosed to test results.

• Simple Routine – Integrates cleanly with Red Sea’s A/B/C foundation program.

Product Specifications

• Product Type: Magnesium supplement (Foundation C)

• Available Sizes: 500 mL, 1 L, 5 L

• Primary Role: Maintain stable magnesium to support balanced Ca/KH and coral calcification

• Intended Use: Marine/reef aquariums (FOWLR, mixed reef, SPS/LPS)

• Dosing Guidance:

  • Test Mg regularly; begin with the manufacturer’s starting dose.

  • Adjust gradually based on measured consumption to maintain your target Mg range.

  • Dose separately from Ca/KH additions; allow time between different supplements.

• Best Practices: Keep salinity and temperature stable; monitor Ca, KH, Mg together for balance; avoid rapid parameter changes

• Storage & Safety: Keep sealed and upright at room temperature; for aquarium use only; keep out of reach of children