The new Eheim Internal filter biopower 200 is an high performance internal filter for Aquaria from approx. 100 up to 200 litres content. Multiple filtering as with an external filter. Modular filter design with closed filter baskets filled with Eheim SUBSTRATpro and a inlet strainer equipped with an original Eheim filter foam cartridge. In a single operation, the Eheim biopower 200 ensures the mechanical-biological cleaning of the aquarium water with permanent circulation, specific surface movement and controllable oxygen supply.Thanks to the pump head that rotates in three dimensions, it is possible to adjust the outflow direction. The output regulator determines the desired flow rate and the air enrichment can be regulated using the diffusor or nozzle tube. In the filter containers, foamed material cartridge provide for mechanical cleaning and Eheim SUBSTRATpro for efficient biological water purification. The new Easy-Click-System enables a simple unlocking of the filter basket. The