Because these systems basically recirculate the water used, they can be smaller and are typically built in enclosed structures, including sheds and greenhouses. The tanks used in recirculating systems range from 200 gallons to 2 million gallons and are made in different sizes and shapes, and from different materials. These systems are so efficient that they can grow as much as one-half pound of fish per gallon of water. Colorite AeroTube™ aeration tubing provides for higher levels of dissolved oxygen (DO), which, in turn, allows for increased stock density. |