One thing is for certain you are definitely going to need some type of pond pump. You're probably going to face the first choice of whether you want a type of pump that is going to be submersed in your pond or whether you opt for the type that you were are going to house outside of the pond but close to that area.
They both have their advantages and disadvantages, and usually when it comes to the operation for water features the pumps are quite compact. For example, people will often choose the submersible pump for these requirements as they are certainly easy to install and they require very little maintenance. They also don't need to be primed.
Some individuals prefer the external pumps feeling that they are more powerful and they are usually much larger in size. One thing that has to be kept in mind however if you are using an external pump it must be protected from the elements, so therefore will need as some type of encasement.
You also want to consider the option of being able to hook up your pond pump with your filtration system. Knowing the size of your pond means that you will need to check the capacity of output of the pump, which will be given in gallons per hour.
The advantage also of using a submersible pump is that it is much easier to camouflage whereas if you are using an external pump then you have to be able to place it where it is out of the way and is not going to be in sight.
The other type of pump that you may come across are those of that are specifically designed for waterfalls or fountain water features.
It is important that you purchase a good-quality pump whether it be for external or submersible. When it comes to submersible pumps you want to make sure that the casing is strong and durable to prevent damage to the internal parts of the pump. or to prevent any type of oil leakage. A good-quality pump is going to give the performance that is required to keep a pond in healthy condition.
In addition to this you want a pump that is quiet sounding. So when it comes down to your choice of pumps you are going to have to determine what the specific need for the pump is, and then the size, and then the choice of whether you want an external or a submersible pump.