Red Sea Salt 20kg Refill

Red Sea

Red Sea Salt 20kg Refill Box 600L

This item is classified as large bulky / heavy item. There might be an additional freight cost. Please contact us for the shipping quote.


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Red Sea Salt 20kg Refill Box 600L

This product is classed as heavy and large bulky. Additional delivery cost may apply.

Please send us a message via the chatbox below prior to placing the order or we can contact you to provide the actual shipping cost after you have placed the order.

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Premium grade, moderate Alkalinity

Red Sea Salt contains moderately elevated and balanced levels of the foundation elements (Calcium, Magnesium, Bicarbonates) necessary for sustainable coral growth.

When combined with our reef care recipes, it will maximize pigment saturation to bring out your coral’s most vivid colors, while encouraging growth up to twice the natural rate. Red Sea Salt’s Alkalinity of 8dKH makes it ideal for all reef aquarium types, and especially SPS dominated tanks.

Natural seawater includes over 70 chemical elements. Most of them influence the water parameters, but only a few play a significant role in its overall chemical stability. These elements form the foundation of the reef environment and include three major elements: Calcium, Magnesium, and Bicarbonates.

The three ‘Red Sea foundation elements’ have a major effect on pH stability, Alkalinity, seawater ionic strength, and many of the coral’s biological processes (skeleton formation, ion-exchange, photosynthesis).

Unlike the natural reef environment, where there is an immense reservoir of the foundation elements, the reef aquarium has limited resources that are quickly depleted by the aquarium inhabitants. Therefore, in order to enable sustainable coral growth, it is necessary to maintain higher than natural levels of the foundation elements.

Original research carried out in Red Sea’s laboratory has shown that when increasing the levels of the foundation elements above the natural sea levels, a very specific ratio between the foundation elements is necessary for coral vitality, and the formation of a robust aragonite coral skeleton.

Red Sea Salt is made according to these ideal ratios, removing the need to adjust the levels of foundation elements after water changes, and providing your corals with a healthy and stable home.


  • All-natural and Eco-friendly

  • Biologically balanced levels of foundation elements

  • Full complement of trace elements

  • Guaranteed parameters for 10 liter / 2.5 gal mix.

  • No toxic levels of Heavy Metals

  • No chemical binders

  • Low moisture content

 Comparing Red Sea Salt & NSW @35pptRed Sea Salt Comparison


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