Table 1.

RAS water composition (mean ± SD, α = 0.05, n = 7)

pH	EC	K+	Na+	Ca2+	Mg2+	NO3−	Cl−	SO42−	HCO3−	P	Zn2+
–	mS cm−1	mmol L−1	mmol L−1	mmol L−1	mmol L−1	mmol L−1	mmol L−1	mmol L−1	mmol L−1	mmol L−1	μmol L−1
7.66 ± 0.11	1.18 ± 0.26	0.20 ± 0.28	8.62 ± 2.37	0.72 ± 0.08	0.12 ± 0.04	1.58 ± 0.38	7.44 ± 0.38	0.22 ± 0.08	1.06 ± 0.38	0.04 ± 0.05	0.16 ± 0.05