Recirculating Aquaculture Systems -RAS

Recirculating aquaculture systems (RAS) are used in home aquaria and for  production of fishes where exchange of water  is limited and the use of bio filtration is required toreduce ammonia toxicity. Other types of separation and environmental control are often alsonecessary to maintain hygienic water and provide a appropriate habitat for fish.
The main benefit of RAS is the ability to reduce the need for fresh, hygienic water while still maintaining a healthy environment for fish. To be operated economically commercial RAS must have high fish supplying densities, and many researchers are currently conducting studies to determine if RAS is a viable form of intensive aquaculture
1.  Grow out tank design
2. Solids removal system
3.Biofiltration system (Design and Materials)
4.Dissolved gas control system
5.Feeds and feeding