Biological swimming pools are becoming a true lifestyle choice. For those seeking to actively contribute to combating the dual crisis of global warming and biodiversity loss, this is the ideal choice. Whether in the private, tourist, or municipal sphere, they always represent a gain for public health, offering soft water regenerated solely by biological [...]
The modest Lesser Skullcap plant is emblematic of the critical, often small, species used as marginal planting in our biological swimming pools. Biodiversity requires a wide and varied offering of species, which collectively provide structure, sustenance, and shade for the swimming environment. This plant is obscure and difficult to source in standard aquatic nurseries. [...]
Natural swimming pools for tourist use require special attention. On one hand, they need to be very individual, to be part of the differentiation of the tourism product in which they are included; on the other hand, they must present some characteristic elements. In a tourism development, whether large or small, the natural swimming [...]
Those who clean their house do so because they expect visitors. And those who clean their biological pool take care of it not only for themselves, but also for nature. From an ecological point of view, a biological pool is a permanently wet area, but quite small in size. Everything that comes from outside [...]
It's not uncommon for rocks to be the preferred decorative element for adorning the edges of a biological pool. While personal preferences always exist, we can establish some rules for choosing the stones to be used near the water. First, the rock must be waterproof, meaning it shouldn't crumble, release chips or minerals into [...]
With the first Autumn rains, the mating season begins for many Iberian amphibian species, unlike in Central Europe, where Spring is the preferred season. In much of the Iberian Peninsula, the comparatively mild weather, with rainy nights, motivates species of tree frogs, toads, and newts to migrate to wetlands. It is not uncommon for [...]
It's not the first time we've heard of someone learning to swim in a biological pool. But this time it was a whole swimming class. Last summer, several children aged 7 to 9 used a biological pool belonging to the parents of one of the children for swimming lessons with a teacher. This happened [...]
In natural swimming pools, biological processes are the same as those in big natural lakes. Aquatic plants play a crucial role in maintaining water quality. The topic of water treatment with aquatic plants was also on the agenda of the 17th Aquatic Plant Symposium in Lisbon, September 15-19, 2025. Therefore, we accepted the invitation [...]
Converting tanks into biological pools depends on several factors, such as size, depth, and other characteristics of the existing tank. For example, on a century-old farm in the north of the country, there was an old stone block tank. Its position, shape, and size allowed it to be incorporated into the design of a [...]
There are rootless aquatic plants living in clean waters called Utricularia. They are distributed worldwide, and two species also exist in Portugal. The plant's green structure is a very thin stem with leaves reduced to filaments. On these thin branches, we can find the utricles. These are round structures about a millimeter in diameter [...]
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