02-28-2006, 12:30 PM
Join Date: Mar 2004
Location: Austin/ Fort Worth, TX
iTrader Positive Rating: 100%
How old is your eheim? Does it have the quick disconnects located on the tubes? The older model eheims didn't come with quickdisconnects.
All you have to do is close the quick disconnects a little (turn the valves located on the quick disconnects) to lower the flow rate. To remove the eheim unit, fully close the quick disconnects, then disconnect them to remove the eheim unit.
Is the current o-ring new? old? I would first try to rub vaseline on the o-rings and use that, or if the o-ring is old, then purchase a new one.