N Added Aquamat 1st Period
(10 days)
2nd Period
(10 days)
3rd Period
(10 days)
Temperature (°C) 24 No 27.69 ± 0.35 27.78 ± 0.28  28.09 ± 0.43
  24 Yes 27.70 ± 0.34 27.81 ± 0.26 28.04 ± 0.44
DO (mg/L) 24 No 5.84 ± 0.25a 5.94 ± 0.23a 5.85 ± 0.13a
  24 Yes 5.75 ± 0.20b 5.78 ± 0.23b 5.74 ± 0.17b
pH 24 No 7.74 ± 0.14 7.66 ± 0.12 7.81 ± 0.12
  24 Yes 7.70 ± 0.15 7.80 ± 0.15 7.78 ± 0.15
Salinity (ppt) 24 No 19.32 ± 0.57 19.52 ± 0.62 20.17 ± 0.70
  24 Yes 19.27 ± 0.63 19.47 ± 0.56 20.33 ± 0.62
Fish biomass gain (g) 3 No (Initial) 120.00 130.00 150.00
    No (Final) 165.05 ± 14.98 140.03 ± 4.91 163.39 ± 7.67
    Yes (Initial) 120.00 130.00 150.00
    Yes (Final) 183.35 ± 16.05 181.61 ± 5.82 226.61 ± 12.67
Survival Rate (%) 3 No 76.72 ± 6.96  67.52 ± 2.37 60.71 ± 2.95
    Yes 85.23 ± 7.46 87.57 ± 2.81 84.20 ± 4.88
Values with different superscripts within row are significantly different (P<0.05)
Table 1: Temperature, DO, pH, salinity, fish biomass gain and survival rate in the daily exchange culture systems with and without Aquamat™. Values are mean ± SD.