Fluval Underwater Filter – U1

Fluval “U1” underwater filter is ideal for use in all aquarium or reptile environments. Use the underwater filter as a primary filter in smaller aquariums or as a supplementary filter for larger aquariums. Also great for tanks with low water levels. Fluval U1 underwater filter offers a Flip-Top for quick and easy maintenance. Suitable for aquariums up to 15 US gal. (55 L).