The Fluval U2 Underwater Filter is a versatile and efficient solution for maintaining a clean and healthy aquarium environment. Ideal for both freshwater and saltwater aquariums ranging from 12 to 30 US gallons (45 to 110 L), this internal filter provides outstanding 3-stage filtration, ensuring crystal-clear water for your aquatic pets. The Fluval U2 not only filters but also increases water movement and provides vital aeration, contributing to a healthier aquatic ecosystem.

This filter's design allows for flexible positioning within the aquarium; it can be mounted vertically or horizontally, making it suitable for tanks with varying water levels. The adjustable 3-way flow control lets you customize the water flow output to meet the specific needs of your aquarium setup. Maintenance is made easy with the convenient flip-top lid, granting quick access to the filter cartridge. The Fluval U2 utilizes a comprehensive 3-stage filtration process, including mechanical, chemical, and biological filtration, with Biomax biological filtering included. Keep your aquarium thriving with the reliable and adaptable Fluval U2 Underwater Filter.

• Ideal for aquariums from 12-30 US Gal (45-110 L)
• Provides 3-stage filtration
• Increases water movement
• Offers vital aeration
• Can be positioned vertically or horizontally
• Adjustable 3-way flow control
• Easy maintenance with flip-top lid
• Suitable for fresh and saltwater aquariums