Marina Floating Thermometer with Suction Cup Tropical Marine Aquarium Fish Tank\n\n \n\nFluval U4 Internal Aquarium Filter\n\nProduct Overview\n\nThe Fluval U4 Internal Aquarium Filter delivers powerful 3-stage filtration for freshwater and marine aquariums up to 240 litres.\n\nFeaturing adjustable 3-way flow control, versatile installation options and complete mechanical, chemical and biological filtration, the U4 is ideal as a primary filter for medium to large aquariums or supplementary filtration for larger systems.\n\nSuitable For\n\n--\nFreshwater aquariums up to 240 litres\n\n--\nMarine aquariums up to 240 litres\n\n--\nTurtle and reptile habitats\n\n--\nPrimary filtration for medium and large aquariums\n\n--\nSupplementary filtration for larger aquariums\n\nKey Features\n\n--\nComplete 3-stage filtration\n\n--\nAdjustable 3-way flow control\n\n--\nVertical or horizontal installation\n\n--\nFlip-top lid for quick media maintenance\n\n--\nIncludes Bio-Foam Pads, Poly-Max Cartriy