What Solar Pump do I need? Solar Pump Selector Enter what you know below. If you don’t know distance or height, use the optional map tool. 1) Water Source Creek Bore Pond Spring Bores require submersible pumps. 2) Litres per Day Required 3) Height to Pump (metres) 4) Distance to Pump (metres) Pipe Size (Internal Diameter mm) Assumed Sun Hours per Day Recommend Pump Optional: Pick on Map Click once for source, once for destination. Result: Enter details and click “Recommend Pump”.