Hagen Fluval U1

<p>the Fluval U1 is a high performance, convenient, internal filter, ideal for use in freshwater and marine aquariums. Fluval U1 creates crystal clear, healthy aquarium water. Filters manufacturer Fluval simple, quiet and efficient service.</p>
the <ul>
the <li>3 stage filter with Bio-Max</li>

the <li>Flip-Top access for quick and easy replacement of individual cartridges</li>

the <li>three way flow control of water</li>

the <li>ability to work in vertical and horizontal p