Is the Koralia #4 pump suppose to rotate on its own or does it just pump out water?
sparkee61 Member Mar 20, 2008 #1 Is the Koralia #4 pump suppose to rotate on its own or does it just pump out water?
nycbob Active Member Mar 20, 2008 #2 it doesnt rotate. it just pumps out water over a wider area than a conventional powerhead.
