TABLE 1.

The seven physicochemical factors studied in the five tanks from Litopenaeus vannamei shrimp farms.

	Tank A	Tank B	Tank C	Tank D	Tank E
Temperature (°C)	28.20	24.80	25.47	24.40	26.42
pH	7.04	8.51	6.83	6.75	7.83
EC (mS/cm)	49.6	50.8	49.9	50.5	51.3
DO (mg/L)	7.21	7.62	7.66	7.86	7.05
Turbidity (NTU)	84.80	4.25	95.10	86.30	32.80
TDS (g/L)	30.3	30.5	30.4	30.3	30.8
Salinity (%)	32.5	33.3	32.7	33.1	33.7

EC: electrical conductivity; DO: dissolved oxygen; NTU: nephelometric turbidity unit; TDS: total dissolved solids.