The BioPlus Thermo line of premium internal corner filters reduces the amount of additional equipment seen in the aquarium by integrating the heater into the filter unit. Perfect for medium sized freshwater aquariums, this filter uses biological, mechanical, and chemical filtration for optimal water quality and clarity. The integrated diffuser with adjustable water flow nozzle allows for uniform surface movement, prevents formation of biofilm, and provides added aeration. For simple cleaning and maintenance the filter foams are housed in separate modules that can be removed while the pump unit and heater remain in place in the aquarium. An additional chamber at the top of the filter unit optimizes your aquarium filtration with an activated carbon foam that removes toxins and odors. OASE offers fine and fleece replacement foams to customize this filter chamber. BioPlus Thermo 50 is suitable for use in aquariums up to 15 gallons. Designed using German engineering and manufactured in Italy, this energy efficient filter is supported by an included 3 year warranty with a free 1 year warranty extension with online product registration. Features: Integrated heater - Provides precise and uniform temperature levels and reduces the amount of equipment seen inside the aquarium by housing the heater in the unit Integrated diffuser with three adjustable water flow settings - Allows for uniform surface movement, prevents formation of biofilm, and provides added aeration Simple cleaning and maintenance - Remove individual filter modules while keeping the pump unit and heater in place for easy cleaning and maintenance Carbon filter foam - Activated Carbon helps to remove cloudy water, harmful metals, odors, tannins or other colors for clear, pure aquarium water. Carbon filter foam make replacement much simpler than using common granular carbon. Quiet operation - Sound dampening design Ideal for use in aquariums up to 15 gallons Made in Italy, backed by German engineering Freshwater compatible UL certified filter 3-year warranty plus 1 year warranty extension with online registration Includes: (1) OASE BioPlus Thermo 50 Internal Filter Color: Grey Product Dimensions: 4.7 in x 4.3 in x 8 in Product Weight: 1.87 lbs Directions: Assemble according to manual instructions. Caution: Consult with your local aquatics store about the environment your fish needs. OASE BioPlus Thermo 50 Internal Filter - Up to 15 Gallons | PetSmart