Oase BioPlus 50 Compact Internal Aquarium Filter

The Oase BioPlus 50 is a discreet internal filter that mounts in the corner of a freshwater tank and filters water in three stages. It is rated for aquariums up to 15 gallons.

• Rated for freshwater tanks up to 15 gallons
• Three-stage filtration: mechanical, biological and chemical
• 20 ppi filter foams and 30 ppi carbon filter foam
• EasyClean magnetic catches release the filter modules
• Diffuser with adjustable flow adds surface movement and aeration
• 3-year warranty
• Weight: 1.32 pounds

Remove the filter modules to rinse the foams; you can also add an Oase HeatUp heater to the filter to cut down on in-tank equipment.