ISS Flowthrough’s innovative bubble barrier technology is designed to tackle the persistent challenge of duckweed. By strategically deploying bubble barriers, we disrupt duckweed growth, providing an efficient and eco-friendly solution.
What is Duckweed?
Duckweed is a small, free-floating aquatic plant that belongs to the Lemnaceae family. Recognised for its rapid growth, duckweed appears as tiny, green floating discs on the water’s surface, often resembling a carpet. Despite its diminutive size, duckweed can proliferate quickly, covering ponds, lakes, and water bodies. Additionally, duckweed is known for its ability to outcompete other aquatic plants, impacting the overall health of aquatic ecosystems. Its resilience makes effective duckweed management crucial for maintaining balanced and aesthetically pleasing water features.
This weed typically thrives in warmer months, with robust growth during spring and summer. It favors still or slow-moving water with high nutrient levels, often proliferating in nutrient-rich environments such as nutrient-loaded ponds or areas with agricultural runoff.


Effecting Water Quality
Duckweed has a significant impact on water quality by forming dense mats on the water’s surface and obstructing sunlight. This shading effect reduces the photosynthetic activity of algae that contribute to oxygen production. As duckweed proliferates, it forms a thick layer, limiting the exchange of gases between the water and the air, leading to decreased dissolved oxygen levels. This oxygen depletion poses a threat to other aquatic life, potentially resulting in fish kills.
Furthermore, the unchecked growth of duckweed contributes to the reduction of beneficial algae, which play a crucial role in maintaining water clarity and providing oxygen. The excessive shading caused by the dense duckweed layer hampers the growth of these beneficial algae, leading to diminished water quality.
Recreational Activities
The rampant growth of duckweed can significantly impact recreational activities on water bodies. Boating, fishing, and other water-based pursuits are impeded as dense mats of duckweed create navigational challenges, limiting access to certain areas. Additionally, the uncontrolled proliferation of duckweed detracts from the aesthetic appeal of water features, diminishing the overall recreational experience. View our blog for more information on how blue green algae can effect recreational activities.
Controlling duckweed is essential for preserving the health and aesthetics of water bodies. Effective management not only ensures a balanced ecosystem and sustains water quality but also enhances the recreational value.


How Bubble Barriers help Duckweed Control
ISS Flowthrough bubble barriers can revolutionise duckweed control with a powerful and flexible approach. Utilising a continuous stream of rising bubbles, our systems create a bubble curtain that disrupts the growth of duckweed. This, in turn, prevents the formation of dense mats on the water’s surface.
What sets ISS Flowthrough’s bubble barrier systems apart from competitors is their remarkable flexibility. Tailored to diverse water bodies, these systems can be easily adjusted and deployed to suit specific needs, providing a highly adaptable and efficient solution for the challenges posed by duckweed infestation.
ISS Flowthrough’s bubble barrier systems offer a sophisticated and adaptable solution to the persistent challenge of duckweed control. Our systems are completely customisable, and contribute to the aesthetics and usability of water bodies, ensuring they remain vibrant, clear, and enjoyable for recreational activities.
