Eheim LOOPpro is the optimal filter for your pond. Because it offers distinct advantages for a filter in its class: It is the only filter in its class with a pre-filter ( based on the model of the Eheim external aquarium filter). Here, coarse dirt (leaves, plant parts, seeds, food residues etc.) is caught before the water flows through the other separate filter chambers. In addition, the Easy Clean backwash removes any remaining impurities. This improves the effectiveness and increases the service life of the biological filter media. In addition, the upstream UVC clarifier kills germs, algae spores, etc. This guarantees crystal-clear, healthy water flowing back into your pond.The Eheim LOOPpro filters are extremely low maintenance, and all components are precisely matched to work with each other. An energy-saving pump (Eheim PLAY or FLOW) is adapted to the respective performance level of the filter to ensure low power consumption. The degree of water contamination is indicated on a dis