What is needed for proper water circulation in the pool?

A good filter system alone is far from being able to guarantee water quality if the other elements related to the circulation of water in the pool are not functioning properly.

There are two ways to drain contaminated water from the pool to the filter system.
On the one hand, this is done with the help of so-called overflows. They are a kind of channel around the pool, into which the water overflows from the surface of the pool. Thanks to the overflow, the water is renewed quickly and evenly. The overflow must be able to ensure the smooth passage of the water pushed out by the bathers in the pool to the filter system.
The disadvantage of the overflow is the greater heat loss through evaporation as well as the higher costs for its construction.

Unlike the overflow, in pools with a skimmer, the water that goes to the filter system is taken from only one or a few places.
It is much more profitable to build a pool with a skimmer than with an overflow, because no additional construction and installation work is required.
When building a pool with a skimmer, you should pay attention to the following feature: the inlet nozzles must always be located opposite the skimmer so that they can push the water towards it.

The way in which the clean water returns to the pool also has a great influence on the correct circulation of the water. The preparations must reach every point in the pool as quickly and evenly as possible.

There are two ways in which the clean water returns to the pool: horizontal and vertical.

In the horizontal method, the nozzles are located along the wall of the pool. If the pool has an overflow, the nozzles are located along the length of the pool.

If the pool has a skimmer, the nozzles must be located opposite it so that they can push the water towards the skimmer.

In the vertical method, the clean water returns from the bottom up, that is, the inlet nozzles are located at the bottom of the pool. This method is used in pools with overflows.