The Green Water Recirculation is designed to provide quality environments for growing fish in all stages of the farm cycle. After initial ponds fills, minimal fresh water resources are required. Ammonia and waste removal is handled by high oxygenation of pond water, allowing a flowing filtration process across the farm.
Reduced electricity is required for lower overall pumping needs. All waste gets treated within the project area maintaining limited impact on external environments. Natural populations of bacteria and algae in these ponds are capable of disposing of the highly digestible particulate from fish waste, nitrogenous compounds, and minute phosphorous matter from waste and uneaten, decomposed feed.
These systems are also known as the green lung as the process converts waste to ammonia, to nitrate (nitrification and de-nitrification via bacteria) through to oxidation, which is then assimilated by algae encouraging their growth and that of zooplankton which is a supplementary natural diet for the fish. The recirculation of this living water reduces the draw on local fresh water sources and minimizes impact on any external environment as it is self-contained and localized. Once filled, the ponds need only minimal replacement water to recover from evaporation and seepage through earthen walls, in or about five per cent replenishment per day. Tilapia are so good at eating water borne biotic compounds that several areas throughout the world use tilapia in public ponds, lakes and reservoir systems to keep vegetation, detritus and even mosquito larvae down, while minimizing purification costs.