Many people find that water in the garden gives rest and relaxation. So alone it can be a good reason to build a pond. You can also build a pond and also understanding of how to stock a pond to attract abundant wildlife. Or because you want a swimming lake or shallow play area for your children where they can dress around for hours. A pond requires a lot of work, both when it is to be constructed and when it is to be kept clean.
However, part of the work can be left to technical installations such as air pumps and water purification filters. You must investigate with your municipality if it requires permission to build a garden pond. There may be local plans that give limitations. There are a number of technical installations. Such as water purification plants, air pumps and bottom sinks, which make it easier to keep the water of the preformed pond kits is clean, fresh and oxygen-rich.
You can build a garden pond kits without these installations, but this means that you get more work to maintain it. You should decide which technical installations you want in the pond before you construct it. It is much easier and cheaper to set up the installations, while building the pond than if you have to do it afterwards.