08-07-2010, 09:13 AM
Join Date: Mar 2008
Location: Liberty, TX, USA
iTrader Positive Rating: 100%
| | Re: Powerhead for freshwater tank
+1 on ddavila06 comments. In a 55, a Koralia 2 will give you fast water movement throughout (plants swaying in the current, etc... ). A Koralia 1 will give you light movement, but still ample circulation (when combined with your other filtration...if used alone, it's ample until the plants get real thick and start blocking flow).