Daily daylight irradiance ranged from 950 to 1200 lmol photon m)2 s)1 with almost all days sunny during the experiment. Water temperature, dissolved oxygen, pH, total ammonia nitrogen (TAN), nitrite (NO2–N), nitrate (NO3–N) and phosphate (PO4–P) values in the fish culture tank are listed in Table 2 and in the inflows and outflows of the seaweed culture tanks