Circular Tanks or Raceways? The Pros and Cons....

摘要

There are many shapes and sizes offish-rearing vessels, ranging from primitive low density dugouts and ponds to high density circular tanks. The shapes most frequently used in intensive fish culture systems are raceways and circular tanks. There are advantages and disadvantages to each. Raceways appear to have great utilization of floor space. The rectangular shapes and long straight sides lend themselves to close packing with common walls. Normally they are approximately 10 times longer than they are wide. Typical dimensions are 10-20ft (3-6m) wide, 100 to 200 ft (30-60m) long, and 3 to 4 ft (0.9-1.2m) deep. Raceways can require 1.5 to 3 times the wall area of a circular tank of similar volume. Although they can be fabricated out of fiberglass, plastic or metal, the typical construction material is reinforced concrete.