For a filter that attaches to nothing but the wall, it's very quiet. Suction cups are standard and easy to place, quiet not noisy at all, good high sheer propeller. My tank is in the living room and i want it silent.

Using it a 40 breeder community tank. My tank is the cleanest its ever been. Keeps tank (36 gallons) clear. Would totally recommend for tanks 10 gal and up.

You can turn this filter sideways and completely submerse it underwater. A test was ran using my new submersible filter alone and then later with my cascade canister.

The u1 comes with a shaped piece of filter foam that has a nice cutout for you to either leave the center of the foam in, or remove it and add your own bio media. The motor/impeller is accessible by snapping open the mounting bracket. Easy to clean an...  Read More

Product didn't last six months this time. Made my cheek red from frustration. Wishing that the product would have worked better and not caused this hassle.

Filter only * in debris at the top half of the unit. Whenever you detach the filter from its frame that attaches to the glass, all the debris pours out from the bottom of the filter right into the tank. The sponge media clogs up within hours.