This plant is commonly used to combat algae and is an excellent natural oxygenator. It is ideal as a filtration plant for swimming ponds and can grow at depths of up to 2 meters. The recommended planting depth is from 60 cm. It produces small white flowers that appear on the surface. This is a perennial, fully submerged plant that floats freely in the water.
Submerged plants play a key role in the natural filtration of water in BIOpools. They are strong competitors to filamentous algae because they absorb large amounts of nutrients directly from the water, which limits algae growth. As they grow from depths of approximately 60 cm up to 2 meters below the surface, they also reduce the amount of light and heat available to algae.
Well-known species include Canadian waterweed, which remains entirely underwater, and Crassula recurva, whose flowers emerge above the surface. In addition to purifying the water, these plants also have a significant oxygenating function. They produce oxygen and consume phosphates, which are one of the main nutrients for algae. This significantly improves water quality and supports a healthy aquatic environment in BIOpools.
No BIOpool should be without this group of plants. It is recommended to include at least five to eight different species, as each submerged plant fulfills a specific role. Together, they contribute to the formation of biofilm, which is essential for natural water filtration.
A well-balanced combination of submerged plants is essential for maintaining a clean, stable, and functional BIOpool—without the need for chemical treatment.
