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Pharmaceutically pure sea salt with probiotic bacteria and prebiotic bacteria food


Syn-Biotic Sea Salt


Product description

Tropic Marin® Syn-Biotic Sea Salt contains probiotic bacteria for fish and shrimp and special prebiotic bacteria food to promote probiotic bacterial growth and to create low-nutrient conditions in the aquarium for LPS and SPS corals. The term synbiotic refers to supplements which combine probiotics and prebiotics in a form of synergism.  

Tropic Marin® Syn-Biotic Sea Salt is ideal when you are setting up a new tank and every time you expand the tank’s stock. It has been proven that probiotic bacteria help to overcome stress and disease while enhancing the health and well-being of fish and crustaceans. For the best results, the aquarium should have a water change with Syn-Biotic Sea Salt prior to any new stock being introduced.  

The contained prebiotic additives promote the integration of nitrates and phosphates in bacterial mass for low-nutrient conditions and the vivid colours of LPS and SPS corals. For a sustained acclimatization of animals to the aquarium conditions and to stabilize the microbiology of the tank system we recommend using Syn-Biotic Sea Salt permanently. Each water change with Syn-Biotic Sea Salt automatically adds the probiotic bacteria necessary to maintain healthy biological processes.

Our Sea Salts in comparison



  • Tropic Marin® Syn-Biotic 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 + prebiotic bacterial food + nitrifying and denitrifying bacteria to support the nitrogen cycle

  • Ideal pH value and buffering

  • Prebiotic bacterial food promotes low-nutrient conditions and the vivid colours of LPS and SPS corals. The microbiology in the aquarium is stabilized and the water quality increases

  • Probiotic bacteria activate the immune system of fish and crustaceans

  • Optimal solubility of all 70 trace elements and stabilisation of these through bioactive substances

  • Can be used permanently and is ideal for setting up a new tank, for new stocking and for any stock expansion

  • Tropic Marin® Syn-Biotic is the ideal basis for the care of even the most sensitive fish, corals, invertebrates and marine algae in modern reef aquariums


Tropic Marin® Syn-Biotic Sea Salt contains all major and trace elements as well as probiotic bacteria and prebiotic bacteria food.

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

To achieve a salinity level of 32–35‰ (psu), dissolve 35 ml (approx. 37–40 g / 1.3–1.4 oz.) of Tropic Marin® Syn-Biotic for every litre or 0.5 cup (approx. 140-150 g) for every US-gallon of water in a container, stirring continuously. The specific gravity of the sea salt solution should be 1.025 to 1.027 at a temperature of 25 °C / 77 °F. The prepared saltwater can be used as soon as the salt is fully dissolved.

Note: When checking the conductivity of freshly prepared Tropic Marin® Syn-Biotic saltwater the conductometer will show ca. 10% low results, because the contained organic substances affect the measurement. We recommend measuring
the specific gravity with the Tropic Marin® Hydrometer.

Slight cloudiness is normal at this stage and indicates that the bioactive substances are taking effect. Changing up to 10% of the water every week using Tropic Marin® Syn-Biotic helps to keep the water quality within the parameters most important to the delicate marine life in your aquarium.

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 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

4 kg Box für 100–120 l / box for 26–32 US-gal.                   Art. Nr. 10404  10 kg Eimer für 250–300 l / bucket for 66–80 US-gal.       Art. Nr. 10410
                                                                                                                              25 kg Eimer für 625–750 l / bucket for 165–200 US-gal.   Art. Nr. 10425

eco friendly packaging
12,5 kg
Karton für 310–375 l / carton for 80–100 US-gal.      Art. Nr. 10412
20 kg Karton für 500–600 l / carton for 130–160 US-gal.       Art. Nr. 10420

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