The BioMaster line of premium external filters is perfect for marine and freshwater aquariums. This filter boasts 4-stage filtration and is designed with sealed filtration pathways to ensure water travels the most efficient path through all filter media - creating optimal water quality and clarity. Water is first directed through the pre-filter's activated carbon foams which remove toxins and odors, then into the main chamber with filter foams of differing pore densities and Hel-x Biomedia - all providing surface area ideal for the settlement of beneficial bacteria. To optimize your aquarium filtration OASE offers coarse 30, fine 45, and ultra-fine 60 ppi replacement foams to customize your pre-filter. The BioMaster filters are engineered with integrated safety locking features on the handle, pre-filter, and check valve in the inlet/outlet connection unit, ensuring no accidental spillage or messy maintenance. The EasyClean pre-filter can be removed and cleaned separately from the rest of the filter, which cuts down on maintenance and extends the life of your filter. Other filter features include simple priming for fast and easy startup, and adjustable flow control for the inlet and outlet. Easily integrate an OASE HeatUp adjustable heater into the BioMaster canister (HeatUp not included). BioMaster 250 is suitable for use in aquariums up to 70 gal.. 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.

• EasyClean pre-filter module Module can be removed separately from the rest of the filter. This reduces maintenance, increases filter efficiency, and extends the life of main filter foams. Customize the pre-filter with coarse 30 ppi, fine 45 ppi, ultra-fine 60 ppi, and activated carbon 45 ppi filter foams
• No mess maintenance Integrated safety locking features on the handle, pre-filter, and check valve in the inlet/outlet connection unit, ensure no accidental spillage or messy maintenance
• Sealed filtration pathways Allows for the full benefits of all four stages of filtration through this intuitive design
• Hel-X Biomedia An extremely large protected settlement surface (800m/1000 liter) that allows beneficial bacteria to grow and thrive. The material is designed to stop floating as soon as it reaches a certain level of bacteria colonization.
• Carbon pre-filter foams Activated carbon absorbs unwanted substances in aquarium water. Carbon filter foams make replacement much simpler than using common granular carbon.
• Adjustable flow control Flow can be adjusted for the inlet and outlet in multiple locations on the filter assembly
• Easy priming Includes simple priming for fast and easy startup and continued operation
• Quiet operation Sound dampening design
• Heater integration capability - Easily integrate an OASE HeatUp adjustable heater into the BioMaster canister (HeatUp not included)
• Whats in the Box - Aquarium Filter, filter media, intake tube with inlet strainer, water distributor nozzle, spray bar, inlet and outlet adapters with flow control, tubing, fittings, heater adapter, and power cable
• Ideal for use in aquariums up to 70 gal.
• Made in Italy, backed by German engineering
• Fresh and marine water compatible
• UL certified filter
• 3 year warranty plus 1 year warranty extension with online registration