UK 3-pin plug!\n\nSuperfish Aqua-Flow 50\nCompact and ideal \nespecially for smaller aquariums, the Superfish Aqua Flow 50 Internal \nFilter features an easy-clean system for simple cleaning and has a dual \naction filter cartridge for optimum performance and filtration.\nAn\n essential part of cleaning your aquarium, effective filters remove \npollutants from the aquarium and breaks them down by the bacterial \naction found within filters, so the water remains healthy promoting fish\n health.\nIdeally sized for medium sized tropical and cold water \naquariums, the Superfish Aqua Flow 50 Internal Filter features a fully \nopen-structure filter foam and active carbon, providing optimal \nfiltering and clear, clean waters, suitable for aquariums with a \ncapacity of up to 50L.\nFilter flow rate of 100L/H. Not adjustable.\n\nCartridges:\n There are two different types of cartridges for these filters. The \nstandard foam (and carbon depending on model) cartridges and the new \nCrystal Cl.