Heron Cay Lake Destratified with Aeration
Posted on October 7, 2018
Heron Cay, a high-end gated residential development in South Florida, experienced a number of problems in their 21-acre lake. The lake needed to be destratified due to severely low oxygen levels at the bottom. Without beneficial bacteria to break down organics, heavy muck accumulation and foul odors were present. The lake used what little available oxygen there was faster than it could be replenished. In addition, excessive nutrient levels from fertilizer runoff made conditions worse. The lake’s Biochemical Oxygen Demand (BOD) was extremely high. During the hottest part of summer, Heron Cay had a very real potential for a serious fish kill.
Aeration Added to the Lake
The lake has maximum water depths of over 20 feet. To ensure efficiency, Vertex installed an aeration system consisting of 11 diffuser stations. Heron Cay was set up on a monitoring schedule to determine how lake dynamics were being affected. The results over the four month monitoring period were dramatic.
Within days of initial start-up, the four main objectives were beginning to be realized:
- The breakdown of temperature and oxygen stratification – the lake’s water was being circulated.
- Increased oxygen levels throughout the entire water column – creating a healthy environment for both fish population and beneficial bacteria.
- Decreased the lake’s Biochemical Oxygen Demand (BOD) – oxygen was no longer being consumed faster than it was being replenished.
The residents of Heron Cay are no longer in danger of oxygen-related fish kills, odors have been eliminated and the lake is returning to natural, healthy conditions. For more detailed information, download the full case study.
“I’ve never seen the lake look better”
– Mark Sanderson, President, Heron Cay HOA
Destratify Your Pond, Lake or Reservoir
Vertex Aquatic Solutions, founded in 1977, is the professionals’ choice for research based scientific consulting services, aeration systems, floating fountains, bubble curtains and biological products to enhance water quality in lakes, ponds, canals, marinas and reservoirs. As respected leaders in the lake management industry the Vertex team of aquatic biologists, limnologists, fisheries scientists and engineers work together to deliver science-based, environmentally sound solutions to complex waterbody issues. Our products and services are delivered through an international network of qualified, experienced waterbody professionals who provide local support, service and pond management expertise to customers.
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