There are smaller hang on back (HOB) filters available than the liberty. From what I hear the liberty uses those skeleton/framed media inserts that are hard to replace with DIY media. Personally I love my AquaClear Mini, using it on a 2.5 gal at the moment. Aquaclear filters are nice because you can stock them with your own media and they hold a lot more than the skeleton media ones. But if you keep a lean tank without overdoing it with fish load and food, the azoo palm filter is probably a perfect choice for a 10 gallon or smaller.
http://www.drsfostersmith.com/produ...atid=9821&Ne=40000&R=16993&Nao=9&N=2004+22769
Giancarlo Podio
http://www.drsfostersmith.com/produ...atid=9821&Ne=40000&R=16993&Nao=9&N=2004+22769
Giancarlo Podio