Which garden pump should I choose (well/cistern)?

There are various types of pumps for wells and cisterns. These can either be suspended in the well or cistern to draw water from the cleanest layer in the middle using a floating intake, or you can use a self-priming pump, which only requires a pipe to be laid in the well or cistern, with the pump itself located outside. Which pump you use depends, for example, on how wide your well shaft is.

Once you have decided on the type of pump, you need to check whether the pump can provide sufficient performance for your irrigation needs.

For lawn irrigation, you need an operating pressure of approx. 3.5 bar. 3.5 bar corresponds to a delivery head of 35 m – this is also stated in the pump's performance diagram.

Here's how to proceed:

1. Determine the actual delivery head (e.g. cistern 2 m deep + 1 m to the pipe = 3 m).
2. Add 35 m (for the 3.5 bar) to this height.
3. Find this exact value in the pump diagram
4. At this point, the pump should ideally still deliver approx. 1.8 m³/h, but at least approx. 0.6 m³/h.

Example: 3 m actual height + 35 m = 38 m → check the pump diagram at 38 m to see if there is still enough water coming through..

In short: Actual height + 35 m → check this value in the diagram → the pump should still be able to supply water at this value.