Juwel Eccoflow 1000lph Ceramic Shaft is a genuine replacement part for the Juwel Eccoflow 500 through to 1000LPH Aquarium Pump.
An Aquarium impeller moves the water through centrifugal force. There are several impeller designs but all have some kind of straight or curved blades. Some impellers are sandwiched between two solid plate (closed) or semi-open with only one plate. The impeller is normally attached to a cylindical magnet with a central shaft running down the middle of the impeller. This type of impeller is known as “magnetic drive”
But it’s not that simple. Simply spinning the impeller will just create a lot of churning water that goes nowhere. In order to move water, the laws of physics must come into play. The spinning impeller must be surrounded in an enclosure to focus the energy the impeller gives to the water. As the impeller spins, water is pulled into the intake port. Kinetic energy from the spinning impeller is transferred to the water. The energized water is forced to the sides of the pump enclosure, which builds pressure and hey presto the water is pumping.
The pump head is designed to guide the pressurized water out of the head through the discharge outlet. This is how a pump pressurizes and moves water. The pump impeller creates flow, not pressure. The pump head design adds a restriction that creates the actual pressure inside the pump. The pressurized water is forced out of the pump and into the aquarium or through a filter. This highlights the need to have coorectly sized outlet hose so as not to crteate back pressure on your pump. Backpressure can seriously reduce the lifespan of your pump.
The design of the head casing, motor RPM and the impeller creates the pressure required to push the water from one place to another. The laws of physics put limits on how much water a pump can move.
A tiny pump will never be able to move as much water volume as a large pump.
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Watch a video here on how to change a Juwel Eccoflow 1000lph Impeller Set