Figure 1

(a–c) Comparison of O. basilicum growth parameters between (a) control with commercial standard growing media substrate in each pot (S1 of Trial I and S2 of Trial II: 100% Einheitserde + dried commercial starter fertiliser) of plants irrigated with hydroponic fertiliser solution (Universol® Orange); (b) basil cultivated with standard growth media substrate “Einheitserde” (E, Trial I) and 15% HFS-substrate (HFS, Trial II) irrigated with process water from the extensive aquaculture unit (EAU); and (c) comparison of basil grown in standard growth media substrate “Einheitserde” (E, Trial I) and 15% HFS (HFS, Trial II) irrigated with process water from the intensive aquaculture unit (IAU); different letters showing different groups (p < 0.05).