If the pond pump is to be stored over the winter, there are a few things to consider. You can read in detail in our article which measures are important, when you can let the pond pump run and when you have to dismantle it.
In very cold winters, it is better to take the pond pump out of the pond
Operate the pond pump in winter
Basically, you can run a pond pump in winter if the pond is heated and the water temperature never drops below 6°C.
This is often the case with koi ponds, for example. Since the fish need warmth to hibernate, such ponds must be heated. At the high water temperatures, the pump can then run smoothly.
For all other (unheated) ponds, however, you should switch off the pump. Whether you also need to dismantle the pump depends on where it is installed. In most cases, however, you will dismantle your pond pump completely and overwinter it in a warm house, protected from frost.
remove pump or not?
In principle, you can always leave pumps in the pond if you are sure that the pond will not freeze up to the pump. If the pump is installed in a shallow water area, be sure to remove it.
In order to leave a pump outside, it must be certified as frost-proof by the manufacturer. This is by far not the case for all pumps - if in doubt, it is better to dismantle the pump and store it indoors over the winter.
Store the pump correctly
Unlike the pond filter, the pump must never be kept dry. You pumps must always be stored in a bucket of clean water. The only exception here are the external pumps: like the pond filters, they are kept dry. In any case, follow the instructions given by the manufacturer in the operating instructions.
Otherwise, if the pump were to dry out, the impeller in the pump could be damaged. Before that, you should be careful.
Like the pond filter, the pump should also be thoroughly cleaned before putting it away for the winter. For instructions, please refer to the user manual.
tips
You also need to take some winter protection measures at the pond itself. For example, the pond must be effectively protected against the ingress of dirt and also kept free of ice so that the fermentation gases that form can escape. You must also remove sensitive plants.