Description
Red Sea Salt – 20kg Refill Box (Mixes up to 600L)
Premium Reef Salt with Moderate Alkalinity
Red Sea Salt is a premium-grade marine salt formulated with moderately elevated and precisely balanced levels of the three foundation elements—Calcium, Magnesium, and Bicarbonates—required for long-term coral health and sustainable growth.
With an alkalinity of 8 dKH, it is suitable for all reef aquarium types and is particularly well suited to SPS-dominated systems, delivering stability, vibrant coloration, and accelerated coral growth when used alongside Red Sea Reef Care programs.
Optimised for Coral Growth & Coloration
When paired with Red Sea’s reef care recipes, this salt mix enhances pigment saturation and encourages coral growth rates of up to twice that of natural reefs, while maintaining chemical stability after every water change.
Foundation Elements Explained
Natural seawater contains more than 70 chemical elements, but only a select few play a critical role in reef stability. These key elements—Calcium, Magnesium, and Bicarbonates—form the foundation of the reef environment and directly influence:
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pH and alkalinity stability
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Seawater ionic balance
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Coral skeletal formation (aragonite)
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Ion exchange and photosynthesis
In closed aquarium systems, these elements are rapidly depleted. To support ongoing coral growth, levels must be maintained above natural seawater concentrations and in precise ratios.
Scientifically Balanced Formula
Red Sea’s in-house research has demonstrated that elevated foundation element levels are only effective when maintained in a very specific balance. Red Sea Salt is manufactured according to these ideal ratios, ensuring:
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Strong, resilient coral skeletons
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Improved coral vitality
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No need for post–water-change parameter correction
This delivers a stable, healthy reef environment with minimal adjustment.
Key Benefits
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All-Natural & Eco-Friendly formulation
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Biologically balanced foundation element levels
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Complete spectrum of trace elements
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Guaranteed parameters for every 10L / 2.5 gallon mix
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No toxic heavy metals
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No chemical binders
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Low moisture content for consistency and ease of use


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