If you put the pump IN the tank, as long as the impeller is submerged, it
will pump, even if the outlet tube is full of air.
Dave

----- Original Message -----
> I want to pump water from a tank to a container using a small pond
> submersible pump (or whatever pump), but when the pump starts, there may
not
> be water in the pipe that goes from the tank to the container

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