Reef Actif - Nutrition for bacteria for treating aquarium water between water changes.

Product description

Tropic Marin® Reef Actif is made up of a mixture of natural organic substances of predominantly marine origin. The biopolymers in Tropic Marin® Reef Actif bind excess nutrients and other pollutants and cause them to be degraded by specialised marine microorganisms. This promotes a natural marine microbiology in the aquarium and keeps the water extremely clear.

By activating the microflora, numerous vitamins and other vital substances are added to the water in a completely natural way. Corals and bivalves open better and reveal all their rich colouring. The fish also benefit from the stable bacterial flora and the prebiotic effect – they develop robustly and show their vitality through flawless colouring and natural behaviour.


  • Ensures constant water conditions between water changes
  • Its double function serves as an adsorbent and as valuable bacterial nutrition in the aquarium
  • Binds nutrients and leads to their conversion by bacteria and other organisms
  • Promotes the breakdown of water pollution by binding water polluting compounds
  • Slow degradation of excess nutrients without consuming the oxygen in the aquarium
  • Improves consistency and continuity of the skimming
  • Increases the vitality and colouring of corals and reef clams


 Tropic Marin® Reef Actif contains predominantly marine biopolymers of algae and plants.

Application and dosage

Add one measuring spoon of Tropic Marin® Reef Actif to 500 litres of aquarium water each week. Stir the preparation into a beaker of aquarium water and then add it to the aquarium to distribute it as finely as possible.

Maximum dosage: One measuring spoon per 500 litres of aquarium water three times a week.

Tropic Marin® Reef Actif can be used with all other products of the Tropic Marin® Bio-Actif System. At the same time, there is no overdosing of organic substances.



Other product recommendations


For further colour intensification of the corals, we recommend the trace element solutions Tropic Marin® K+ Elements and A- Elements.