The unique Tropic Marin® Bio-Actif sea salt contains naturally occurring marine biopolymers, which support the microbiological conditions in an aquarium and thus protect and enhance the growth of aquarium fauna.  

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To this end, corals will exhibit their bright and vibrant colors in a natural way, while skeletal growth and/or the growth of stronger tissues are promoted. The reserves built up in this manner ensure that corals are more robust and less sensitive than otherwise. Fish also benefit from the bio-active substances by the formation of effective protection against damage to mucous membranes. Fish will exhibit their heightened sense of well-being by increased mating and reproduction activity.  

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Tropic Marin® Bio-Actif sea salt is suitable for both beginners and advanced aquarists, and ensures stable conditions for all marine organisms at an alkalinity in the range of 8-9 °dH.

• Tropic Marin® Bio-Actif is particularly well suited to reef aquariums

• Contains all main and trace elements of tropical seawater in natural proportions. Optimal calcium and magnesium concentrations for reef aquariums + prebiotic bacterial food

• 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

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