What’s a filter really for? How does an external filter work and what are the advantages and disadvantages of external filters? What’s more important - the pump capacity or the volume? How does an internal filter work, what types are there and what are the advantages and disadvantages of internal aquarium filters? Which filter size is the right one?
Find all the JBL filters available with additional information at: Filtering .
Find more information on filtering in the Themeworld Aquarium under: Aquarium filters and aquarium accessories .