The Aquel Unifilter is a unique internal power filter which includes a built in UV steriliser. Internal power filters are ideal for use in small coldwater and tropical aquariums where they provide mechanical, biological and chemical filtration. The Unifilter’s pumps draws water through a filter foam which provides the filtration for the aquarium. The unique feature of the Unifilter is the built in UV LEDs. Water that has been filtered by the foam passes the UV light source, killing bacteria and algae. This helps to create healthy aquarium water and reduces the impact of disease outbreaks.UV LED diodes built-in the impeller chamber;adjustable water flow rate;two ways of assembling with adjustable air flow;adjustable output direction;two separate sponge filtration cartridges;two alternative ways of hanging – A or B;simple maintenance;Product Features:Wattage: 8,5 WMax output: 750 l/hTank volume: 200-300 l