For use in the aquarium or filter sump- Space-saving due to internal water supply- Highly efficient filtration due to high flow through your chosen filter media (sold separately) such as activated carbon (Carbolit), phosphate absorber (antiphos FE), zeolite, fine filter and so on- Adjustable water flow- Very simple maintenance due to removable filling tube, the filter housing incl. pump can remain in the aquarium for refilling and maintenance- Incl. pump of 12 V safety tension- Flexibly adjustable mounting system (multi reactor L can also be placed upright in the filter sump)New in 2nd generation- Extremely quiet in operation- Low vibration due to a decoupled pump connection- Optimised water flow with adjustable water level, low noiseOnly valid for versions L + M:- Due to the new double-chamber-system two different types of filter media can be used simultaneously- single-chamber-operation is also possible by removing the separating bottom of the reaction chamber