Efficient land-based fish farm

Abstract

Efficient fish farming techniques are described, including a land-based saltwater flow-through pool fed by seawater intakes, and efficient water flow and waste removal techniques that promote good fish growing conditions. Features include devices for encouraging laminar flow in the flow-through pool, and efficient waste removal, and multiple seawater intakes from different ocean depths.

1 . An aquaculture system comprising:
 an inlet in a headend wall of a flow-through pool for providing a fluid to the pool;   a dish positioned inside the pool and centered on a center of the inlet for distributing a current from the inlet along the headend wall;   a pressure filter creating an antechamber at a headend of the pool, wherein the inlet and the headend wall are in the antechamber; and   a spoiler positioned between the dish and the pressure filter.   
     
     
         2 . The system of  claim 1 , wherein the dish is paraboloid in shape. 
     
     
         3 . The system of  claim 23 , further comprising:
 a first curved fillet at a joint of the headend wall and the frame wall; and   a second curved fillet at a joint between the frame wall and the return fin.   
     
     
         4 . The system of  claim 23 , further comprising:
 a second inlet in the headend wall; and   wherein a portion of the frame wall bisects the headend wall between the inlet and the second inlet.   
     
     
         5 . The system of  claim 23 , wherein a wall of the pool or a floor of the pool form a portion of the frame wall. 
     
     
         6 - 19 . (canceled) 
     
     
         20 . The system of  claim 1 , wherein the spoiler surrounds the inlet with circular symmetry. 
     
     
         21 . The system of  claim 1 , wherein the spoiler includes a hole in the center of the spoiler and the hole is centered on the center of the inlet. 
     
     
         22 . The system of  claim 1 , wherein the headend wall and the pressure filter are parallel to each other, and the spoiler is angled relative to the headend wall and the pressure filter. 
     
     
         23 . The system of  claim 1 , further comprising:
 a frame wall around the inlet extending from the headend wall and along the pool; and   a return fin inside the antechamber and extending inward toward the inlet from the frame wall between the headend wall and the pressure filter.