Sand filter – natural purification of waters

A sand filter is used to clean a stagnant water. It can be used outdoors and indoors. The sand filter system is characterized by its easy maintenance. The installation can be done quickly. In contrast to other filter systems, the sand filter is installed outdoors and does not lead to any visual impairment of the system.

Powerful external filter for many applications

A sand filter system is very handy if you want to clean artificially created waters. The problem with these waters is that they are standing. They have no natural flow. Due to algae, dying plants, but also by leaves and the feces of fish and other animals living in the water, it can quickly pollute. Natural flowing waters purify themselves when it comes to healthy waters that have not yet been affected by pollution.
The situation is different with stagnant waters, which were artificially created. These waters require a powerful filter system to filter out the dirt. This is especially important when the water is used as a habitat for fish and other aquatic animals. For cleaning a body of water different filter systems come into question. A sand filter proves to be particularly effective. In addition, a system with sand filter can be easily installed, cleaned and maintained.

Versatile uses of a sand filter

The sand filter is characterized by its easy installation, but also by a very efficient mode of action. You can install a sand filter on almost any stagnant water that requires regular cleaning. These include ponds and aquariums, as well as swimming pools, fountains or a basin of rainwater that you would like to keep clean. If you have decided to set up an aquarium, the sand filter system is also a very good alternative.
Many filters that are specifically designed for aquariums are hung inside the pool. The advantage is that such a filter requires little space. If you have a small aquarium in a corner of the room and due to furniture or other furnishings only little space, the internal filter disappears in the aquarium.
It is also very powerful when adapted to the size of the aquarium. However, there are optical disadvantages, because you have to hide the filter behind plants or a foil, if you put value on a nice look. More serious is the danger for small fish. If a small species of fish floats in the vicinity of the filter, it may be that it is sucked in and then dies painfully. These problems do not arise with an external filter, which is why many aquarium owners opt for it.

Install sand filter outdoors

When installing the sand filter outdoors, there are usually no problems. The filter is simply placed near the pond or swimming pool. The filter systems can be used regardless of the size of the pool. It is important that the performance of the filter is matched to the size of the pool. If the filter is too small, it will be difficult to achieve good performance. The filter flow is insufficient to effectively purify the water. But since you usually have no problems with the place, especially in the outdoor area, you should choose the system rather too big than too small.
You can partially let the sand filter into the ground or hide it behind some plants, so it is not visually visible. If you want a nearly noiseless work of the filter, you decide for a particularly quiet pump. You can buy a complete sand filter system or you decide to purchase individual parts that you can combine according to your wishes.
This is one of the many advantages of a sand filter, because you have the opportunity to build and put together the filter system exactly as you wish. In this way you can easily and efficiently adapt the filter to the system that you operate in your garden.

How does a sand filter work?

As the name suggests, the system uses sand as filter material. The sand is very fine. He is kept in a container. This can be a bucket for simple filter systems that you fill with sand and seal. But you can also opt for a finished, state-of-the-art facility that’s already assembled and you just have to install it.
The sand filter system works with a Umwältzpumpe. This pump ensures that the water is routed through the filter permanently.
The sand filter not only cleans the stagnant water from dirt and feces. The water that passes through the sand filter also generates oxygen. This is important when fish live in the water. But the formation of algae is prevented by the accumulation of oxygen. You must periodically replace the sand that is in the filter. The frequency depends on the pollution of the water. Replacement is easy and sand is considered to be a very cheap means for a filter compared to other filter systems.