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PR-Aqua - Recirculating Aquaculture System (RAS)
FromPR Aqua, ULC
Recirculating Aquaculture System, or RAS, is a technique for raising aquatic species in a closed, indoor, land-based system. This minimizes water consumption, provides maximum control of the environment, and reduces the risk of exposure to parasites, disease, and predators.
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How Does RAS Work?
System water is filtered, disinfected, re-oxygenated and conditioned using a variety of technologies and processes so that it is safe for use by the fish. The water is recirculated so that very little make-up water is required, sometimes less than 1%. Waste is recovered for disposal or used as fertilizers.
The Superior Benefits of RAS
- Water savings: 95% - 99% of the water in the system is recirculated within the system, efficiently reducing the amount of water required for fish production.
- Mortality reduction: The closed system ensures biosecurity by reducing or eliminating pathogens. Sea lice and other health conditions that affect fish grown in net pens are not an issue with RAS systems.
- Faster throughput: Optimal water conditions and nutrition provide quicker fish growth.
- Higher quality fish: RAS reduces fish stress, producing healthier, better tasting fish.
- Natural Products: Minimal to zero hormones and antibiotics are used in RAS-grown fish.
- Environmentally Friendly: Water conservation promises a low impact on environmental resources.
- Process Automation: Extensive monitoring systems provide 24-hour control over feed and water quality.
- Location: Fish are produced near the marketplace, reducing transportation costs and providing the freshest fish possible to the consumer.