Biological lakes can be designed according to demands and needs. Pools that can be shaped completely according to the consumer's desire and the architectural concept of the house where they will settle in the garden, especially when children have the chance to grow and live together with nature, their skins, eyes are not damaged and they are not exposed to the harmful effects of chemicals. The water in the ponds will always remain clean and clear on their own ecological balance, without the need for any chemicals.