Sera Filter Biostart should be used in new filters, directly on new biological filter media and after filter cleaning.
Sera Filter Biostart immediately accelerates the biological filter performance, and sets an end to sludge deposits and unpleasant odors. The enzymes break down organic material (uneaten food, fish waste) into smaller fragments. These are then further broken down by the highly active micro organisms in the filter.
Use 5ml per 200 litres of aquarium water weekly.
For freshwater use only.