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Free standard shipping on orders over $99
Terms and Conditions Apply!
We can ship to any address in Australia and New Zealand. Note that there are restrictions on some products, and some products cannot be shipped to some locations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full kilo.
Red Sea Reef Care Magnesium Foundation C is a premium liquid supplement formulated to maintain optimal magnesium levels in reef aquariums. Magnesium is essential for stabilizing calcium and alkalinity, ensuring proper skeletal growth and overall coral health. As part of Red Sea’s comprehensive Reef Care program, this supplement helps reef keepers maintain a balanced, thriving marine environment.
Essential for Coral Health: Supports coral skeletal growth and enhances resilience.
Maintains Ion Balance: Stabilizes calcium and alkalinity levels for consistent water chemistry.
High-Purity Formula: Made from pharmaceutical-grade ingredients for safe and effective dosing.
Complete System Compatibility: Works seamlessly with Red Sea’s Reef Foundation supplements for a balanced reef tank.
Easy-to-Use Liquid: Provides quick and efficient absorption for maximum effectiveness.
Test magnesium levels using a reliable reef test kit.
Shake well before use.
Dose according to your aquarium’s magnesium requirements.
Add the supplement to a high-flow area of the sump or directly into the aquarium.
Regularly monitor magnesium levels to maintain 1,280–1,400 ppm.
500 ml – Suitable for smaller reef tanks or beginner reef keepers.
1 L – Ideal for larger systems or long-term maintenance.
Red Sea Reef Care Magnesium Foundation C is essential for reef aquariums that require stable magnesium levels to support coral growth and overall tank health. It is particularly recommended for hobbyists using Red Sea’s complete Reef Care system or those seeking precise control over water chemistry. Regular testing and proper dosing adjustments will ensure a balanced and thriving reef ecosystem.
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