• External filter operates quietly to circulate and filter your aquarium water Includes 4-stage filtration: biological, mechanical, chemical, and prefiltration
• Hel-X, suspended filter media, creates the optimal surface area for beneficial bacteria growth
• The sealed filtration pathway allows you to get the full benefits from all 4-stages of filtration
• The EasyClean prefilter module can be removed separately from the rest of the filter for simple cleaning and to extend the life of your filter
• Adjustable flow control is built into the inlet and outlet of the filter
• Diffuser and spray bar can be utilized for uniform surface movement and additional dissolved oxygen integration
• Includes a self-priming function for simple startup and continued operation
• Features a carrying handle for simple moving and maintenance
• Created for installation under the aquarium
• All necessary fittings are included
• Customize prefilter with coarse, fine, ultra fine, and activated carbon filter foams
• Energy efficient
• Made in Italy, backed by German engineering
• Fresh and marine water compatible

The BioMaster line of premium external filters are perfect for marine and freshwater aquariums. The BioMaster 250 boasts 4-stage filtration in a compact design. Biological, mechanical, chemical, and prefiltration all work together to provide your aquarium with optimal water quality and clarity. The BioMaster filters are designed with sealed filtration pathways to ensure water flow is getting the full benefits of prefiltration, filter media for clearer water, Hel-X Biomedia provide a large suspended settlement surface for microorganisms, and activated carbon for ideal nutrient reduction and removal of toxins. The EasyClean prefilter module can be removed and cleaned separately from the rest of the filter for high efficiency and to extend the life of your filter. Created for convenient placement under the aquarium. Customize your prefilter by combining coarse, fine, ultra fine, and activated carbon filter foams.