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Larval rearing tanks range from 1 - 2800 m3. Large larval tanks are built from coated concrete, while fiberglass or plastic are used for smaller tanks. Concrete tanks must be filled with seawater and aged for at least 50-60 days before use. Larval tanks must be designed to allow rapid and complete draining. Most larval rearing tanks are in-doors. Large tank systems are usually enclosed in greenhouse structures or buildings with translucent fiberglass panels. Larvae should be protected from freshwater inflow, direct sunlight, and dust (Colt & Huguenin, 1992). |