- Tropic Marin^® BIO-ACTIF is an innovative product combining the protective and growth-promoting action of natural bioactive marine substances with its optimal formula composed of the very purest ingredients.

- Develops a sound microbiological balance which stabilises the water quality and supports the nutrient intake of invertebrates.

- Made with pharmaceutically pure salts.

- All main and trace elements as well as bioactive substances native to tropical sea-water contained in a natural formula.

- The 70 trace elements and mineral nutrients are held by the bioactive substances in their dissolved state as natural organic complexes.

- Free of nitrates, phosphates and other unnatural enrichment additives.

- Tropic Marin^® BIO-ACTIF is the ideal base formula for the care of even the most delicate fish and corals.

- Highly compatible with BIO-CALCIUM ACTIF / ACTIF Liquid and the other components of the Tropic Marin^® BIO-ACTIF SYSTEM.

If you want to find out more about the advantages and optimisation of the Tropic Marin^® BIO-ACTIF SYSTEM, visit our homepage www.tropic-marin.com.

Directions for use: To achieve a salinity level of 32 - 35 ‰ (psu), dissolve 35 ml of BIO-ACTIF for every litre or one half cup for every US-gallon of water in a container, stirring continuously.

The specific gravity of the sea salt solution should be 1.024 to 1.026 at a temperature of 25°C.

Attention: When checking the conductivity of freshly prepared BIO-ACTIF saltwater the conductometer will show ca. 10% low results. We recommend measuring the specific gravity with the Tropic Marin Hydrometer.

The prepared saltwater can be used as soon as the salt is fully dissolved. Slight cloudiness is normal at this stage and indicates that the bioactive substances are taking effect.

After setting up a new aquarium it takes a few weeks of circulating and lighting to establish stable biological conditions for the care of delicate marine organisms. Changing up to 15 % of the water every week using Tropic Marin BIO-ACTIF helps to keep the water quality within the parameters most important to the delicate marine life in your aquarium.