This 1000EF External aquarium filter system from 'All Pond Solutions' uses a multi-stage approach to filtration and filters your tank water through a number of distinct filter materials that are separated into different layered baskets to provide biological, mechanical and chemical filtration to your aquarium fish tank. These filters work on the same principle as internal powerhead filters, but are positioned outside the tank and draw water into the filter through an inlet tube and return the water via an outlet tube. The outlet tube is fitted with a spray bar to increase aeration within your tank. These type of external filters avoid the need for an unsightly filter inside the tank and the media capacity is much larger than internal filters and they are therefore suitable for much larger tanks. By filtering your tank using the provided filter media you will see a much improved level of waste-free water, strong biological purification and active control of your water characteristics. Thanks to the filters layered basket system and ease of access it is very simple to customise your media choices to suit your aquarium and live stock needs. Filter maintenance is very easy as the units drip free shut off tap allows you to move the filter away from your aquarium fish tank to another area more suitable for cleaning. Each filter media basket lifts easily out of the unit and can be easily rinsed over a sink or likewise and returned back to the aquarium filter unit to continue its operation. Features Suitable for fresh & salt water aquarium tanks Suitable for tanks up to 400 Litres Self priming unit, filter fully self primes after simple setup Drip free shut off tap for easy cleaning Three filter media basket compartments for layered filtering Included filter media; Bio balls, Ceramic rings, Activated carbon and three fine filter floss foams Specifications Model: '1000EF' All Pond Solutions External Filter Flow Rate: 1000 Litres per Hour Hose size: 20mm Outside diameter, 15mm Inside diameter Water Volume: 8 Litres (Approx) Height max: 2 Metres Voltage: 220-240v Power: 18w Dimensions: 232 x 232 x 395 mm 12 Months warranty.