Effects of flow rate on dissolved oxygen in aquaculture raceways system

Abstract

This study was carried out to measure correlation between flow rate in the recirculation system with the level of dissolved oxygen in fish tank, establish the regression equation of the correlation between the two parameters if the correlation proved to be significant and to investigate the relationship between the flow rate of the raceways and growth rate of the fish in 30 days if the correlation proved to be significant. Raceways systems are designed with three culture tank, water reservoir and water filters. In system, water flows are running with electric pump from water filters after through of three phase substrate: (1) aquarium sponge; (2) Calcium bicarbonate; (3) bioball. Water in system kept in holder tank above and flows through to culture tank with 14 inch pipe.