How to choose a submersible pump for fish farming?

Friends with fish farming experience should all know the importance of the fish tank filtration system, and the fish tank water pump is an important part of the fish tank filtration system. Therefore, it is very important for fishermen to choose a suitable water pump. Now let Jinta Xiaobian take you to understand how to choose a submersible pump for fish farming?

1. Power. Power The amount of work done by a machine in a unit of time is called power, and the unit is kilowatts.

The root cause of poor quality fish in many fish tanks is that the power of the fish tank pump is too small and the breeding density is relatively high. The fish kept having problems. Therefore, it is very important for aquarists to choose the right water pump.

Choosing a suitable submersible pump depends on whether the power of the pump is suitable. The factors to be considered when choosing a water pump are: the size of the fish tank, the form of filtration, the richness of the filter material, the breeding density, the size of the fish, the type of fish, etc. To put it simply, if the capacity of the fish tank is larger, the filter material is smaller and simpler, the breeding density is larger, the fish is larger, and the metabolism of the fish is faster, the power of the submersible pump needs to be larger to be a suitable choice. .

2. Traffic. Flow, also known as water delivery, refers to the amount of water delivered by the pump per unit of time, and its units are liters per second, cubic meters per second, and cubic meters per hour.

The flow rate of the fish tank submersible pump is related to the size of your fish tank, the water level and the density of the fish. The general calculation method is that the flow rate of the fish tank submersible pump is 6-8 times the water volume of your fish tank. For example, if your fish tank size is 2m*0.9m*0.8m and the water level is 0.7m, then the volume of the water body in the fish tank is 1260L, then in general the flow range you need is about 7560-10080L/H. So you can choose one 8000 or two 5000. If your breeding density is not very large, two 3500 are also possible.

3. Head. Lift refers to the height that the pump can lift water, and the unit is meters. This is the highest vertical height the pump can pump water from the outlet!

4. Quality. Pumps with poor quality will have great safety hazards!

There are various problems such as loud noise, rusted metal parts, cracked wires, and non-working. Therefore, when choosing a water pump, you must choose some well-known and reputable brands. You can't just buy some low-quality water pumps just to save money.

5. What is the relationship between power, flow, and lift?

According to the relationship between flow and head, pumps can be divided into two categories: flow pump and head pump. Axial flow pump is a typical flow pump, which is characterized by large flow and small head. Centrifugal pumps (especially multi-stage centrifugal pumps) can lift water to very high heights, but the flow is relatively small. When the water lifting height increases, the flow rate of the flow pump will decrease sharply, while the flow attenuation of the head pump is relatively small.

There is a certain relationship between head, flow and power. To ensure sufficient head and flow, corresponding power must be provided. Low-power water pumps, because of their poor ability to lift water, not only have a small lift, but also the flow will drop sharply as the height increases. Therefore, when the water-lifting height is relatively large, the power should be taken as an important reference index. . The actual flow of the pump is usually not easy to judge. If you only look at the flow indicators provided by the manufacturer, there may be a big difference.

Flow, everyone likes to choose a pump with a large flow, so if you choose a pump with the same flow, the smaller the power, the more savings. For the bottom filter, the attenuation of the actual flow should not be taken lightly. The flow rate of the pump is proportional to the volume of the aquarium. Generally speaking, even if the density of fish farming is small, the flow rate/hour should be at least 2-3 times the volume of the aquarium.