Table 2. Details on the stocking, amount of feed fed, specific growth rate (SGR), food conversion ratio (FCR), mortalities, water consumption and limestone added to control pH in the fish units of the coupled (RAS C) and decoupled aquaponic system (RAS D) compared to the control (RAS A) after 30, 63, 94, 122 and 154 d.
RAS | sampling intervals | days [d] | stocked tanks [n] | tank volume [m3] | RAS stocking start [kg] | RAS stocking end [kg] | fish growth [kg month-1] | feed [kg] | FCR | SGR | mortalities [%] of stocking end | water consumption [m³] | water consumption [%RAS d-1] | limestone addition [kg] |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | 07.04.-06.05.15 | 30 | 1 | 1.7 | 66.9 | 104.3 | 37.4 | 37.2 | 1.0 | 1.5 | 0.1 | 14.92 | 3.0 | 0.9 |
07.05.-08.06.15 | 63 | 2 | 1.7 | 104.3 | 153.1 | 48.8 | 58.2 | 1.2 | 1.2 | 0.2 | 29.33 | 5.4 | 1.3 | |
09.06.-09.07.15 | 94 | 2 | 1.7 | 153.1 | 220.5 | 67.4 | 75.6 | 1.1 | 1.2 | 0.3 | 29.33 | 5.7 | 2.4 | |
10.07.-06.08.15 | 122 | 3 | 1.7 | 220.5 | 273.4 | 52.9 | 71.0 | 1.3 | 0.8 | 0.1 | 28.51 | 6.2 | 2.4 | |
07.08.-07.09.15 | 154 | 3 | 1.7 | 273.4 | 324.6 | 51.3 | 83.7 | 1.6 | 0.5 | 0.4 | 32.02 | 6.1 | 5.1 | |
total / average | 154 | 257.7 | 325.6 | 1.3 | 1.0 | 0.8 | 134.12 | 5.3 | 12.1 | |||||
C | 07.04.-06.05.15 | 30 | 1 | 1.7 | 66.8 | 101.0 | 34.2 | 37.2 | 1.1 | 1.4 | 0.0 | 15.24 | 3.1 | 0.7 |
07.05.-08.06.15 | 63 | 2 | 1.7 | 101.0 | 147.6 | 46.6 | 58.2 | 1.2 | 1.1 | 0.4 | 13.05 | 2.4 | 1.7 | |
09.06.-09.07.15 | 94 | 2 | 1.7 | 147.6 | 218.9 | 71.3 | 75.6 | 1.1 | 1.3 | 0.0 | 13.86 | 2.7 | 4.1 | |
10.07.-06.08.15 | 122 | 3 | 1.7 | 218.9 | 275.1 | 56.2 | 71.0 | 1.3 | 0.8 | 0.3 | 16.47 | 3.6 | 3.1 | |
07.08.-07.09.15 | 154 | 3 | 1.7 | 275.1 | 330.2 | 55.1 | 83.7 | 1.5 | 0.6 | 0.3 | 15.25 | 2.9 | 6.0 | |
total / average | 154 | 263.4 | 325.6 | 1.2 | 1.0 | 0.7 | 73.87 | 2.9 | 15.6 | |||||
D | 07.04.-06.05.15 | 30 | 1 | 1.7 | 66.8 | 102.4 | 35.6 | 37.2 | 1.0 | 1.4 | 0.2 | 15.91 | 3.2 | 0.5 |
07.05.-08.06.15 | 63 | 2 | 1.7 | 102.4 | 145.5 | 43.2 | 58.2 | 1.3 | 1.1 | 0.1 | 12.52 | 2.3 | 1.4 | |
09.06.-09.07.15 | 94 | 2 | 1.7 | 145.5 | 217.9 | 72.3 | 75.6 | 1.0 | 1.3 | 0.1 | 13.86 | 2.7 | 4.0 | |
10.07.-06.08.15 | 122 | 3 | 1.7 | 217.9 | 271.5 | 53.7 | 71.0 | 1.3 | 0.8 | 0.2 | 16.07 | 3.5 | 3.3 | |
07.08.-07.09.15 | 154 | 3 | 1.7 | 271.5 | 323.7 | 52.2 | 83.7 | 1.6 | 0.5 | 0.1 | 13.59 | 2.6 | 6.1 | |
total / average | 154 | 256.9 | 325.6 | 1.3 | 1.0 | 0.4 | 71.95 | 2.8 | 15.3 |