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Red Sea Salt

Ideal marine salt for mature reef and low nutrient systems

Red Sea Salt is designed to provide the exact parameters of tropical reef water with a slightly elevated alkalinity as needed in a closed marine system.


Red Sea salt is ideal for fish and invertebrate systems or for low-nutrient tanks where the hobbyist supplements all of the individual elements on a regular basis.


Red Sea Marine Salt parameters graphs and tables

Red Sea Marine Salt parameters graphs and tables




  • All-natural Eco-friendly harvesting from the waters of the exotic Red Sea
  • Biologically balanced levels of foundation elements
  • Full complement of trace elements
  • Guaranteed parameters for 10 liter / 2.5 gal mix.
  • No nitrates or phosphates (algae nutrients)
  • No toxic levels of Heavy Metals
  • No chemical  binders
  • Low moisture content



 Recommended usage of Red Sea Salt:

Aquarium Type
Alkalinity (dKH/meq/l)
Ca (mg/l)
Mg (mg/l)
K (mg/l)
31.0 ppt
6.8 – 7.2 / 2.4 – 2.5
365 – 385
1090 – 1150
330 – 350
33.4 g/l
Non-Coral Inverts
33.5 ppt
7.3 – 7.7 / 2.6 – 2.7
390 – 410
1170 – 1230
360 – 380
36.0 g/l
35.5 ppt
7.8 – 8.2 / 2.8 – 2.9
420 – 440
1250 – 1310
380  – 400
38.2 g/l



The Foundation Elements …It’s all in the balance
Red Sea Salt advance formula for coral reef and marine aquarium systems

Red Sea Salt formula

Red Sea Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for sustainable, accelerated coral growth. Red Sea Salt is ideal for reef aquariums, in particular for LPS and SPS corals, and for growing coral frags.


Natural seawater includes over 70 chemical elements and although most of the elements influence the water parameters, a few of them have a more significant role in its overall chemical stability.
These elements form the foundation of the reef environment and they include the three major elements:calcium, magnesium and bi-carbonates.

These three ‘foundation elements’ have a major effect on the water chemistry (pH stability, alkalinity, seawater ionic strength) and on 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 in a closed system (an aquarium) a specific ratio between the foundation elements of calcium, magnesium and carbonates (alkalinity) is necessary for coral vitality and the formation of a robust aragonite coral skeleton. This ratio must be maintained especially when increasing the levels of the foundation elements above the natural sea levels.


Red Sea Salt is made according to these ideal ratios and remove the need to adjust the levels of foundation elements after water changes and significantly improving the wellbeing of corals.

Red sea Salt is available in these sizes:

  • 4 kg (8.8 lb.) Bag / Water volume: 120 liters (32 gal.)
  • 7 kg. (15.4 lb.) Bucket/ Water volume: 210 liters (55 gal.)
  • 22 kg. (48.5 lb.) Bucket/ Water volume: 660 liters (175 gal.)

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Red Sea Salt 22kg

  • Brand: Red Sea
  • Product Code: Red Sea Salt 22kg
  • Availability: 2-3 Days
  • £59.99