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Red Sea

Red Sea Reef Foundation C – Magnesium

(0)
$20.99
In stock - 20 items available
Usually ships within 24 hours
500ML
Packed with care, every time

Livestock orders are double-bagged, insulated, and shipped with a heat or ice pack based on your destination's weather, so your fish and coral arrive healthy and ready for your tank.

Free shipping over $299
Live arrival guarantee
Trusted since 1991

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Email (305) 227-9414

Stabilize calcium and alkalinity with Red Sea Reef Foundation C – Magnesium, a concentrated liquid supplement that maintains natural seawater magnesium levels in reef aquariums.

Magnesium helps stabilize calcium and alkalinity, preventing unwanted precipitation and ensuring these essential elements remain available for coral growth. Proper magnesium levels support healthy skeletal development in stony corals, coralline algae growth, and overall reef stability. Suitable for manual or automated dosing as part of Red Sea's Reef Foundation supplementation program.

All livestock ships via FedEx Priority Overnight, double-bagged and temperature-protected with a heat or ice pack as needed for your destination.

Florida orders under $299 ship for $25; out-of-state orders under $299 ship for $40. Orders over $299 ship free. We don't currently ship to Alaska, Hawaii, Puerto Rico, or outside the continental U.S.

Free in-store pickup is always available — contact us for details.

If your coral arrives dead on arrival (DOA), report it within 2 hours of the delivery time shown on your FedEx tracking — email a clear photo to info@strictlyfishmiami.com and we'll issue a store credit for the purchase price of the livestock.

See our full Refund Policy for details.