Fluval U2 Underwater Filter - For Aquariums 110 L (30 US Gal) Saltwater Substrates integrated ATO and dosing holes

integrated ATO and dosing holes makes it easy to arrange both tubing

0% Calcium (min

Anti-rust coating does not pollute the living environment of aquatic plants and animals

Bio-Pure® FD Tubifex Worms

and then coated with stabilized vitamins

Fluval U2 Underwater Filter - For Aquariums 110 L (30 US Gal) Saltwater Substrates integrated ATO and dosing holesFluval U2 Underwater Filter provides complete and efficient 3 stage filtration, including BioMax biological filtering, to create superior aquarium water quality. The U2 Filter includes practical and versatile features, making it ideal for application in fresh, marine and reptile environments. The filter provides the option of setting the flow output in 3 different positions, a key benchmark in underwater filtration. The adjustable 3 way flow control