The Ziss Bubble Bio internal filter is the first of it's kind in the world. The patented innovative design is incredibly sophisticated and easy to use at the same time. You can easily control and maintain your water quality with this fantastic internal aquarium fish filter. Ziss Bubble Bio bubble moving media filter. It can be used for both Marine and Freshwater fish tanks up to 200 litres. Bubble Bio is an air powered fluidised bed filter, combined with ultra-small biological filter media.