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Classic sea salt

Pharmaceutically pure sea salt for marine aquaria


Product description

Tropic Marin® Classic sea salt is an ideal foundation for the care and growth of all marine organisms in an aquarium. The salt is made up of all of the macro elements and trace elements in a natural balance, contained within the ocean, and it is free from artificial additives. It contains appropriate amounts of bicarbonates which stabilize the aquariums alkalinity and pH. With Tropic Marin® Classic sea salt you can maintain the alkalinity in a 9-10 °dH range.  

All of our sea salts are manufactured with pure, pharmaceutical grade salts. This compliance with the most stringent quality control measures for the production of pharmaceuticals ensures the processing into salt water that is identical to natural seawater.”

Our Sea Salts in comparison


  • Tropic Marin® Classic is particularly well suited to aquariums with high levels of fish stock

  • Contains all major, minor and trace elements of tropical seawater in natural proportions

  • 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® Classic is the ideal basis for the care of even the most sensitive fish, corals and invertebrates in modern reef aquariums


Anwendung & Dosierung

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® Classic for regular water changes in your saltwater aquarium, to start a new aquarium and to re-equilibrate the pH of the tank. To achieve a salinity level of 32–35‰ (psu), dissolve 35 ml (approx. 37–40 g / 1.3–1.4 oz.) of the sea salt for every litre or 0.5 cup (approx. 140-150 g) for every US-gallon of water in a container.

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 volume with saltwater prepared with Tropic Marin® Classic, 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 Tropic Marin® Carbo-Calcium or rather Tropic Marin® 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 / 4.4 lbs. Can  for approx. 60 l                       Art.Nr. 10112             4 kg / 8.8 lbs. Box  for approx. 120 l / 32 US-Gal.                      Art.Nr. 10124 

10 kg / 22 lbs. Bucket for approx. 300 l                Art.Nr. 10128            25 kg / 55 lbs. Bucket for approx. 750 l / 200 US-Gal               Art.Nr. 10134

eco friendly packaging
12,5 kg Karton für 310–375 l /
carton for 80–100 US-gal.             Art. Nr. 10130
20 kg Karton für 500–600 l /
carton for 130–160 US-gal.              Art. Nr. 10132

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