Betta Internal filters have an abundance of features making them a wise choice for all fishkeepers. Fully submersible and suitable for both freshwater and saltwater use this low noise filter offers superb energy efficency and easy clean interlocking filter chambers. With 360 directional flow nozzle for optimal aeration this filter offers all the features expected in an Internal Filter. Supplied with filter cartridge. For high performance effective filtration in the aquarium.