Take a dip in pure, clear, clean water!
Nowadays, installing a swimming pool means choosing between a traditional pool and a more eco-friendly option such as a natural pool. It is therefore important to weigh up the pros and cons. It is also necessary to consider not only the environmental impact but also the health risks.
As a result, biological, natural and biomineral swimming pools are becoming increasingly popular. And with good reason: they pose no threat to the planet or to human health.
But how do you tell the difference? And how do you choose the pool that’s best for you? A closer look at the difference between natural and biological swimming pools.
Natural swimming pools: the concept and how they work
Before making a decision, it is worth going back to basics and understanding the key features of each eco-friendly swimming pool.
The origins of so-called eco-friendly swimming pools can be traced back to the swimming pond. This is a garden pond featuring a filtration area designed to filter the swimming zone.
The concept then evolved into the natural swimming pool: a hybrid pool combining pressure filtration with plant-based lagunage.
This filtration system relies on plants and microorganisms to clean, oxygenate and filter the water.
To achieve this, the natural pool is divided into three areas:
- The swimming area where everyone can swim, play and relax.
- The lagooning zone is a shallower basin than the first one and serves to filter the bathing water using plants, rocks and microorganisms.
- The first two zones are connected by the regeneration zone, which oxygenates the water.
What are the pros and cons of a natural swimming pool?
A natural swimming pool has many advantages.
- First of all, it does not use any chemicals to purify or clean its water. The water is safe and poses no risk whatsoever to either human health or the environment.
- A natural swimming pool allows you to create a genuine ecosystem. If the pool is well maintained, animals such as frogs, invertebrates and others may make their home there. These animals help to rid the pool of mosquito larvae, for example. This is a boon for aquatic flora and fauna.
Of course, there are drawbacks.
- A natural swimming pool tends to be more expensive due to the installation of the various pools.
- It cannot be heated. The plants would not survive if the temperature were too high.
- A constructed wetland requires careful maintenance. It is essential to monitor it regularly for clogging to prevent blockages.
- Finally, the water may appear greener due to the presence of bacteria and microorganisms.

Find out more about the natural swimming pool
The biological or biomineral swimming pool: the concept and how it works
The eco-friendly choice for today and tomorrow
A biological or biomineral pool is an evolution of the natural pool. It features a built-in pool with a pressure filtration system and no lagoon area.
The main difference between a natural pool and a biological pool is that the latter doesn’t use plants to filter the water!
This pool is based on bacterial filtration.
This unique system filters water without using chemicals such as chlorine or bromine. By drawing on living organisms, ecological filtration can mimic the processes found in nature.
The water is first cleaned. All suspended impurities are removed mechanically and dissolved organically. The water is then disinfected using a UV filter with an oxidation system.
Finally, minerals and bacteria are added to the filtration system to maintain the water’s balance.
This filtration system cleans the water in an environmentally friendly and organic way. It also allows for the use of accessories such as heating, covers and other equipment. Furthermore, this system can be installed in indoor or outdoor, private or public swimming pools.
What are the pros and cons of a biomineral pool?
This technology offers numerous benefits.
- Firstly, it can be installed in all types of swimming pools, whether they are already built or not. This means that every pool can benefit from natural, chemical-free water.
- The water is clean and pure. It offers a unique swimming experience. The water is crystal-clear and gentle, reminiscent of mountain lakes! A real treat.
- It poses no health risks. Therefore, there is no risk of irritation or an allergic reaction.
- This filtration method uses less water and does not pollute water sources.
- Water can be heated both indoors and outdoors.
- And let’s not forget that this helps to extend the lifespan of the biomineral pool.
Filtration may involve a higher initial investment. However, it can pay for itself in the long run.

What is the difference between a natural pool and a biological pool?
Natural and biological pools are both types of so-called eco-friendly pools. The difference lies in the filtration method. Natural pools use plants to filter the water, whereas biological pools use bacterial filtration.
This difference affects not only the heating and maintenance of the pool, but also how easy it is to install.
At Vitii, we offer a unique biological filtration system for your biological and bio-mineral pools.
By taking the concept of the natural swimming pool a step further, we have developed a fully biological filtration system that combines the benefits of pure, soft water – water that is healthy for the body and poses no risk to health or the environment – with the pleasures of a traditional swimming pool, such as the ability to adjust the water temperature, installation in an existing pool, and the option of an indoor or outdoor location. An ideal solution for the swimming pools of today and tomorrow.
Vitii’s primary aim is to provide you with a unique swimming experience thanks to water that is clear, gentle and healthy for both you and the environment.