Modern seasalts are the key to near-nature water values in the marine aquarium. Professional seasalt should contain all the required components and substances which are consumed by the the inhabitants of marine aquarium. It includes calcium and carbonate hardness as well as magnesium and macro- like trace elements. All the salts offered by us are suitable for marine aquarium. If the aquarium is well stocked with consumers like corals, the seasalt should be added with seasalt having high output values like „Professional“-salt. Normally the salt should always be mixed in the given ratio with osmosis water – depending on the manufacturer, a different salt quantity is required to reach a salinity of 32 – 35 ‰ (psu) or thickness of 1,022 to 1,024 (25°C). We also recommend to regularly change the manfacturer and products.