Selection of Pond Pumps – a way to find the suitable pond pump

The selection of the right Pond Pump depends on a variety of factors. On the one side the size of the garden pond is essential, on the other side the field of application plays an important role.

Do you want to operate a pond filter system? Is there a waterfall or a stream run? Do you wish to have a pond skimmer or a water ornament as for example a little fountain or the like?

Apart from that, a pond pump should operate as efficiently as possible with regard to energy, so that unnecessary energy costs can be avoided.
In most cases, the pond pump works throughout the whole year and round the clock so that you should take into consideration to acquire the most energy-saving pond pump when it comes to select the right one.

The capacity of the pond pump must be necessarily adjusted to the size of the pond filter. Any oversized flow rate will result in an overflow of the pond filter which is to be prevented at all costs.Moreover, you should take into account the pond´s circulation cycle as well as the period of time of the pond water in the pond filter.

According to the type of usage, the ideal circulation cycle depends on different factors: the fish population, aquatic plants, the quantity of sunlight or the desired water clarity. It goes without saying that, as the case may be, there are further components of the filter circuit that are to be coordinated, if necessary.

Basically, two distinctions are to be made, in all of which the opinions differ considerably in part.

1. Optimal Circulation of the Pond

The circulation cycle is defined as the time in hours for passing the entire pond contents through the pond filter.

The following information may serve you as a guideline:

Koi pond / Fish pond:

• 1 cycle per 3 hours
• 2 circulations in 1 hour (without plantings and with large fish population)

Garden pond / Plant pond:

Regarding a pond without fish, there is less circulation necessary. One circulation in a day can be taken as a guideline in order to enrich the pond water with oxygen and to keep the water in constant movement.

Swim pond:

In this case the circulation cycle is highly dependent on the planting and the individual claim.
The upper limit is to be made at 1 x in 2-3 hours, the lower limit at “no circulation”.

2. Resting period of the water in the pond filter / Filter volume

SunSun Pond Filter CBF-350CHere, the actual volume of the pond filter used in non-pressurized pond filter systems is interesting to focus on:

Item 50107 – SunSun CBF-350 Bio-Pond Filter = approx. 85 liters of volume
Item 50108 – SunSun CBF-350B Bio-Pond Filter = approx. 170 liters of volume
Item 50114 – SunSun CBF-350C Bio-Pond Filter = approx. 250 liters of volume
Item 50167 – SunSun CBF-550 Bio-Pond Filter = approx. 110 liters of volume

After a period of 2-3 weeks there are nitrifying bacteria that colonize the filter sponges. They need quite a time to act on the water.
The aspirated period of time that the pond pump in usage requires to fill the pond filter completely once a time, should be with the above mentioned filter volumes between 1,5 minutes and 3 minutes.

With regard to a Mini Pond, a pond pump with a circulation capacity up to 1.000 liters per hour is sufficient. In this case it would be helpful for example to use a fountain pump with a filter. Small to medium sized ponds with an approximate size of up to 10 cubic meters require, at a circulations rate of about once a time every 2 hours, a pond pump delivering up to 5.000 litres per hour. In accordance with larger ponds the size of the pond pump is to be adjusted accordingly. Apart from the size of the pond, there are also to be taken into consideration the fish population and the flow rate that the pond pump loses when the water has to be transported from great depth or to higher altitudes. The average and the length of the hose in usage also affect the quantity of water that reaches the pond filter. The indicated values are meant to be a guideline and may help you to find the suitable pond pump for your garden pond.

Fountain pumps are a visual highlight in a garden pond and beyond that enrich the garden pond with oxygen. We also offer fountain ponds that are equipped with additional filters and UVC-clarifiers to the effect that the fountain pump represents a true surplus value for every garden pond.

Sunsun Clarifier CUV-636

In order to ensure a proper function of the pond pumps it is indispensable to clean them regularly. We recommend a weekly cleaning of the pond pumps. For this, the pond pump should be opened in order to remove any dirt stuck on the pump shaft.

For questions with respect to the cleaning procedure please do not hesitate to contact our support team.