Bacteria for the activation of new and cleaned filters for freshwater and marine aquariums, liquid.Key Features:• For aquarium water to suit both fish and plants: to biologically activate filters, setting up aquariums, for water changes and for re-establishing bacteria after fish diseases. For freshwater and marine aquariums, turtle and shrimp tanks.• For the use of new filters, after filter cleaning and the use of medication.• For a fast biological filter settling: breakdown of ammonium/ammonia and nitrite through highly active living bacteria.• Sufficient for 3L filter material.