well, the setting for it is on the lowest it can get, and the water just kind of drips into the tank. the filter came with my tank set which is Hagen brand, and he all day long will do to the other side of the tank, flare, swim fast to the filter, hit it, then swim behind the heater. non stop whether it's on or off and it's really concerning me now because it has been in for about a week already and he won't stop