Table 1.

Physical and chemical characteristics of the test water.

Group	Before/After Refreshing Water	Dissolved Oxygen (mg/L)	Conductivity (μs/cm)	pH	Temperature (°C)
Control	before	7.55 ± 0.36	747 ± 7	8.03 ± 0.17	26.8 ± 1.1
	after	7.77 ± 0.15	732 ± 3	8.29 ± 0.06	27.3 ± 0.9
MPs-treated	before	7.57 ± 0.46	750 ± 9	8.04 ± 0.22	26.6 ± 1.2
	after	7.71 ± 0.20	734 ± 2	8.25 ± 0.07	27.1 ± 1.0