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So far Udo has created 161 blog entries.

September 2020



September is the month when water is most lacking in nature. The lakes and dams have a very low level, even some are already dry, and in the streams there is little water left. This is the time when the kingfisher starts to appear next to the biological pools. Since he finds a place [...]


August 2020

Rare spieces


There are few rare species of aquatic plants. Many of them have a large distribution from North to South in Europe and even some are found naturally on both sides of the Atlantic Ocean or from Portugal to Siberia. This is explained by the adaptation of aquatic plants to live in or at the [...]

Rare spieces2020-07-31T16:37:52+01:00

Designing swimming ponds since 25 years


In this interview Udo Schwarzer, biologist, talks about his work with biological pools, which have been a story of success for 25 years. Water is important to you because ...? It's life. What was the first biological pool that you designed? A successful challenge. What distinguishes designs from the early days from today? The [...]

Designing swimming ponds since 25 years2020-07-31T16:39:45+01:00

July 2020



Plant growth is essential for the ecosystem in a biological pool. Well growing plants incorporate nutrients diluted in water and are thus the natural competitors of algae. Well-developed aquatic vegetation is the basis for bathing  water quality. Like terrestrial plants, aquatic plants also release a lot of oxygen during the day. In well-oxygenated water, [...]


New robot available


The new robot BioVac PC XL cleans and hoovers the bottom of biological pools with a program of  2 hours. Program selection "Floor" or "Floor and mechanically pre-cleaned wall" via a selection switch, suitable for all biological pool configurations. Easy to use: no bag, no hose. Easy access to filter from above to the [...]

New robot available2020-06-29T15:05:39+01:00

June 2020

International Swimming Pond Day


The International Swimming Pond Day is Saturday, June 20, 2020. To commemorate this International Day, IOB, the international organization of professionals for pools with biological treatment and Bio Piscinas, Lda. invite everyone to send an image of their own biological pool (or the one used on holidays with swimming pond), with or without bathers, [...]

International Swimming Pond Day2020-05-31T15:20:14+01:00

Holidays with swimming pond, for sure!


It's time to schedule summer holidays. Holidays with swimming pond, of course! Get inspired here on our map of accommodations with biological pool. The new COVID-19 virus does not like being outside the human body, nor does it like the aquatic environment very much. There are still few studies with viruses in biological pools, [...]

Holidays with swimming pond, for sure!2020-05-31T15:18:53+01:00

Designing swimming ponds since 25 years


In the interview landscape architect Claudia Schwarzer reflects on her work with biological pools, which have been a story of success for 25 years. Is water important to you because ...? ... I've always loved water, and I love swimming. In my childhood I played a lot with and near the water and dreamed [...]

Designing swimming ponds since 25 years2020-05-31T16:47:28+01:00

May 2020



Did you know that not only amphibians have a double life? Frogs and toads live first in the water, while young as tadpoles. But also among insects there are species that spend their youth in the water and adult life in the air. We talk about dragonflies and damselflies. More than 60 species live [...]


Two types of natural pools


Most biological pools are configured as small lakes for bathing. They have a division into two zones, one for bathing and another, which surrounds the first, where the plants that are purifying the water grow. But there are also biological pools of architectural forms (biopool), with basins confusing similar with conventional pools. In these [...]

Two types of natural pools2020-04-30T16:00:41+01:00
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