Parameters T-1 T-2 T-3 T-4 T-5 T-6
Range Mean ± SE Range Mean ± SE Range Mean ± SE Range Mean ± SE Range Mean ± SE Range Mean ± SE
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pH 7.4-8.2   7.7-8.2   7.8-8.2   7.7-8.2   7.9-8.2   7.8-8.3  
Free CO2 (mg/l) 0-16 5.375 ± 0.93 0-20 6.25 ± 1.09 0-16 4.75 ± 0.83 0-18 6.38 ± 1.10 0-24 7.5 ± 1.30 0-30 7.75 ± 1.39
Carbonate (mg/l) 0-24 5.63 ± 0.91 0-28 8.31 ± 1.14 0-20 6 ± 0.80 0-18 4.88 ± 0.71 0-20 5.69 ± 0.82 0-18 6.06 ± 0.77
Bicarbonate (mg/l) 24-294 132.31 ± 14.98 26-370 169.19 ± 19.47 16-312 149 ± 17.35 16-260 132.63 ± 15.02 18-290 150.75 ± 16.91 18-320 148.75 ± 17.13
Alkalinity (mg/l) 28-318 137.94 ± 15.16 42-398 177.5 ± 19.48 23-330 155 ± 17.28 20-276 137.5 ± 14.99 23-301 156.44 ± 16.84 26-338 154.81 ± 17.04
Hardness (mg/l) 224-328 271.25 ± 4.35 260-428 346.625 ± 7.73 268-404 325.81 ± 4.90 244-372 303.25 ± 5.34 224-328 284.5 ± 4.46 248-356 307.5 ± 4.16
TDS (mg/l) 298-565 488.125 420-912 691.1875 325-605 531.0625 320-700 678.5 278-588 486.75 322-645 540.875
Conductivity (μS/cm) 590-755 673.38 570-1260 954.875 853-589 750.9375 610-990 801.9375 575-774 679.75 600-896 758.375
DO (mg/l) 6-8.9 8.16 ± 0.12 0.8-6 2.28 ± 0.28 6.8-8.2 8.15 ± 0.03 6.9-7.9 7.52 ± 0.04 6.8-8.1 7.77 ± 0.04 6.8-9 7.95 ± 0.08
Open
pH 8.3-8.8   8.3-9.2   8.3-8.8   8.5-9   8.3-8.8   8.3-8.8  
Free CO2 (mg/l) 0 0 0 0 0 0 0 0 0 0 0 0
Carbonate (mg/l) 3- 22 9.3125 ± 0.74 6- 24 11.56 ± 0.65 4- 18 9.8125 ± 0.59 4- 16 9.8125 ± 0.54 5-20 11.06 ± 0.74 6- 20 11.50 ± 0.62
Bicarbonate (mg/l) 24-289 150.62 ± 16.59 18-322 168.31 ± 18.2 28-305 164.56 ± 17.8 28-308 162.69 ± 17.45 22-295 147.5 ± 16.28 22-310 161.375 ± 18.2
Alkalinity (mg/l) 27-311 159.94 ± 17.23 24-346 179.88 ± 18.7 34-323 174.38 ± 18.3 32-322 172.5 ± 17.95 27-311 158.56 ± 16.91 28-324 172.88 ± 18.84
Hardness (mg/l) 240-364 296 ± 4.82 220-392 311.5 ± 6.58 216-344 275.75 ± 3.99 240-324 289.5 ± 3.46 260-332 305.125 ± 3.02 246-340 291.94 ± 3.96
TDS (mg/l) 260-570 479.3125 259-633 552.6875 240-510 430.9375 246-512 447.9375 280-590 498.75 257-558 493.8125
Conductivity (μS/cm) 575-760 665.8125 570-890 753.0625 535-686 617.375 560-723 647.0625 577-840 713.0625 584-786 695.125
DO (mg/l) 8-10.1 9.32 ± 0.08 1.1-8.1 3.71 ± 0.32 7.4-10.4 9.38 ± 0.12 7.7-10.5 9.39 ± 0.11 7.9-10.7 9.53 ± 0.12 7.6-11.1 9.64 ± 0.14
Table 2: Range and mean (S.E.) of water quality parameters in different treatments under enclosed polyhouse and open conditions.