The Eheim Reeflex UV 2000 is a higly effective UV clarifier unit for fresh and marine water aquariums from approx. 1200 up to 2000 litres. The Eheim Reeflex UV clarifiersuse UV-C radiation to clean aquarium water in fresh and sea water aquariums and are operated in the filter systems water cycle (discharge side) or by using a separate circulation pump (not included). Aquarium water permanently flows through a glass tube and past the UV-C bulb inside the aluminium body. As a result, free-floating algae, bacteria, fungi, viruses and other pathogens are reduced or eliminated. The Eheim Reeflex UV clarifiers ensure that aquarium water is clean and crystal-clear, keeping the fish healthy.Benefits of the Eheim reeflexUV+ quickly and effectively reduces microorganisms in the water+ eliminates torpidity caused by algae or bacteria+ internally fitted high gloss aluminium reflects the UV-C light and ensures extra efficient sterilisation+ excellent results with low energy consumption (1,8 times