Table 1.
Water quality parameters measured at the tank outlets on days 82, 116, and 172 of the experiment.
| Day of Experiment | Treatment | Temp (°C) | O2 (% sat) |
Conductivity (mS/cm) | Salinity (ppt) | pH | CO2 (mg/L) | TAN (mg/L) | Turbidity (NTU) |
|---|---|---|---|---|---|---|---|---|---|
| Day 82 | LD | 14.0 ± 0.0 | 91.7 ± 6.4 | 52.3 ± 0.1 | 33.8 ± 0.0 | 7.5 ± 0.1 * | 12.8 ± 0.9 * | 0.4 ± 0.1 | 0.2 ± 0.0 |
| HD | 14.0 ± 0.1 | 93.0 ± 7.0 | 52.3 ± 0.0 | 33.8 ± 0.0 | 7.1 ± 0.2 * | 22.1 ± 2.8 * | 0.6 ± 0.1 | 0.3 ± 0.1 | |
| Day 116 | LD | 13.0 ± 0.0 | 90.0 ± 1.0 | 49.8 ± 0.0 | 31.9 ± 0.0 | 7.5 ± 0.2 | 10.7 ± 1.0 * | 0.4 ± 0.1 | 0.2 ± 0.0 |
| HD | 13.0 ± 0.1 | 92.7 ± 1.5 | 49.8 ± 0.0 | 31.9 ± 0.0 | 7.2 ± 0.2 | 16.8 ± 3.5 * | 0.5 ± 0.1 | 0.2 ± 0.0 | |
| Day 172 | LD | 13.1 ± 0.0 | 94.0 ± 1.0 | 49.4 ± 0.0 | 31.7 ± 0.1 | 7.6 ± 0.2 | 12.3 ± 1.6 | 0.5 ± 0.0 | 0.2 ± 0.0 |
| HD | 13.0 ± 0.1 | 97.0 ± 2.0 | 49.4 ± 0.0 | 31.7 ± 0.0 | 7.5 ± 0.1 | 14.0 ± 0.4 | 0.5 ± 0.0 | 0.2 ± 0.0 |
Values are given as tank means ± STDEV (n = 3 for each treatment) ⁎ Denotes significant difference (t test, p < 0.05) between treatments on days 82 and 116 of the experiment.