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Pro-Reef Sea Salt

Pharmaceutically pure sea salt for reef aquaria


Product description

Tropic Marin® Pro-Reef  sea salt has been designed to meet the special requirements of reef aquariums with optimized concentrations of calcium and magnesium, which promote the growth of corals. The adjusted buffering stabilizes pH and alkalinity, even when kalk reactors and other methods of alkalinity supply are used. Natural and stable conditions for delicate marine life are achieved only by accurately balancing all influencing factors. With Tropic Marin® Pro-Reef you can maintain the alkalinity in a 7-8° dKH range.

Tropic Marin® Pro-Reef is thus the ideal foundation for the care and growth of fish, corals and other aquatic invertebrates in modern reef aquariums. Use seawater prepared with Tropic Marin® Pro-Reef for regular water changes in your seawater aquarium, to start a new aquarium and to re-equilibrate the pH of a tank.

Our Sea Salts in comparison


  • Tropic Marin® Pro-Reef is particularly well suited to reef aquariums.

  • Contains all major, minor and trace elements of tropical seawater in natural proportions. Optimal calcium and magnesium concentrations
    for reef aquariums.

  • Ideal pH value and buffering.

  • Optimal solubility of all 70 trace elements.

  • Prepared salt water can be stored for several weeks before use in the aquarium.

  • Tropic Marin® Pro-Reef is the ideal basis for the care of even the most sensitive fish, corals and invertebrates in modern reef aquariums.


Contains all major- and minor elements in the exact proportions found in tropical sea water.

Major Elements:

Calcium; Chlorine; Magnesium; Potassium; Sodium; Sulfur.

Trace Elements:

Aluminium; Antimony; Arsenic; Barium; Beryllium; Bismuth; Boron; Bromine; Cadmium; Caesium; Carbon; Cerium; Chromium; Cobalt; Copper; Dysprosium; Erbium; Europium; Fluorine; Gadolinium; Gallium; Germanium; Gold; Hafnium; Holmium; Indium; Iodine; Iridium; Iron; Lanthanum; Lead; Lithium; Lutetium; Manganese; Mercury; Molybdenum; Neodymium; Nickel; Niobium; Nitrogen; Osmium; Palladium; Platinum; Praseodymium; Rhenium; Rhodium; Rubidium; Ruthenium; Samarium; Scandium; Selenium; Silicon; Silver; Strontium; Tantalum; Tellurium; Terbium; Thallium; Thorium; Thulium; Tin; Titanium; Tungsten; Vanadium; Ytterbium; Yttrium; Zinc; Zirconium.

Application & Dosage

Use saltwater prepared with Tropic Marin® Pro-Reef for regular water changes in your saltwater aquarium, to start a new aquarium and to restore pH balance in an existing aquarium. To achieve a salinity level of 32–35‰ (psu), dissolve 35 ml (approx. 37–40 g / 1.3–1.4 oz.) of Tropic Marin® Pro-Reef for every litre or 0.5 cup (approx. 140-150 g) for every US-gallon of water in a container, circulating continuously.

The resulting seawater is ready for use as soon as the salt is completely dissolved and the solution is clear. The specific gravity of the sea salt solution should be 1.025 to 1.027 at a temperature of 25 °C / 77 °F. A weekly, partial water change, replacing 10% of the total water volumen with saltwater prepared with Tropic Marin® Pro-Reef, will help to maintain the water quality that your livestock needs for good health.

Dosing calculator

Other product recommendations

The very accurate, straightforward Tropic Marin® water tests KH/Alkalinity or KH/Alkalinity Professional and the Calcium/ Magnesium-Test Professional are suited for checking the quality of the water and the essential parameters.
For the daily supply of calcium and alkalinity, we recommend the new Tropic Marin® Carbo-Calcium or rather All-For-Reef or the application of the well-known Balling method with the Tropic Marin® Original Balling products.

Frequently asked questions

Answers to frequently asked questions about this product can be found in our FAQ section.

Container sizes

2 kg Dose für 50–60 l / can for 13–16 US-gal.                    Art. Nr. 10522     4 kg Box für 100–120 l / box for 26–32 US-gal.                  Art. Nr. 10524
10 kg Eimer für 250–300 l / bucket for 66–80 US-gal.      Art. Nr. 10551     25 kg Eimer für 625–750 l / bucket for 165–200 US-gal.  Art. Nr. 10581

eco friendly packaging
12,5 kg Karton für 310–375 l / carton for 80–100 US-gal.    Art. Nr. 10560
20 kg Karton für 500–600 l / carton for 130–160 US-gal.     Art. Nr. 10572

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