The BioMaster or BioMaster Thermo is an external filter for aquariums between 250 and 600 litres in size with high fish stock. It offers convenience for the most rigorous requirements. The BioMaster can not only be conveniently concealed in the aquarium base cabinet, it is also easy to clean. The prefilter can be completely removed, simply rinse out and re-insert it – neat and clean thanks to the EasyClean prefilter module. The aquarium filter is available with or without the HeatUp adjustable heater. The BioMaster ensures discrete highly efficient filter technology outside of your aquarium!