This pump from pondxpert boast the lowest running costs we have ever seen from a filter pump!Despite the generous flow rate of 5000lph the engineers at PondXpert have managed to develop a motor to create this flow requiring just 26 watts of power!The pump comes complete with a 20 40mm hosetail so will accept 20 40mm hose 34 to 112.If your pond water runs too low the pump will automatically detect this and switch itself off to avoid damage.