Table 7. Nutrient recovery (%) of hybrid lemon fin barb, red claw crayfish, and Ocimum basilicum exposed to different night light regimen in a polyculture aquaponic system

% Recovery	0 h	4 h	8 h	12 h
Fish
N	30.94 ± 1.83^a	31.20 ± 0.67^a	31.61 ± 1.90^a	30.81 ± 0.58^a
P	44.58 ± 2.38^a	48.16 ± 0.27^a	48.30 ± 2.11^a	48.27 ± 1.78^a
K	37.63 ± 1.43^a	37.04 ± 0.84^a	37.73 ± 0.17^a	37.06 ± 1.55^a
Crayfish
N	18.69 ± 0.61^a	19.40 ± 0.81^a	20.14 ± 1.71^a	20.48 ± 0.96^a
P	9.32 ± 0.39^a	9.70 ± 0.35^a	9.70 ± 0.50^a	10.25 ± 0.67^a
K	6.07 ± 0.18^a	6.23 ± 0.63^a	6.36 ± 0.81^a	6.57 ± 0.81^a
Total (fish and crayfish)
N	49.64 ± 1.95^a	50.60 ± 0.45^a	51.75 ± 1.26^a	51.28 ± 0.39^a
P	53.89 ± 1.99^a	57.87 ± 0.53^a	58.01 ± 1.62^a	58.51 ± 2.20^a
K	43.70 ± 1.59	43.27 ± 1.41^a	44.10 ± 0.66^a	43.63 ± 0.86^a
O. basilicum (cycle 1)
N	11.39 ± 0.78^a	11.75 ± 0.39^a	11.64 ± 0.32^a	11.26 ± 0.53^a
P	3.78 ± 0.28^a	4.11 ± 0.10^a	4.05 ± 0.08^a	3.98 ± 0.32^a
K	7.71 ± 0.44^a	7.85 ± 0.27^a	7.76 ± 0.23^a	7.63 ± 0.61^a
O. basilicum (cycle 2)
N	12.86 ± 0.98^a	12.95 ± 0.98^a	12.73 ± 0.41^a	12.41 ± 1.00^a
P	4.51 ± 0.43^a	4.70 ± 0.36^a	4.61 ± 0.13^a	4.63 ± 0.50^a
K	8.51 ± 0.66^a	8.43 ± 0.43^a	8.45 ± 0.06^a	8.30 ± 0.72^a
Total herb (2-cycles)
N	24.25 ± 1.74^a	24.70 ± 1.29^a	24.37 ± 0.73^a	23.66 ± 1.52^a
P	8.29 ± 0.71^a	8.81 ± 0.46^a	8.66 ± 0.19^a	9.00 ± 0.58^a
K	16.23 ± 0.92^a	16.29 ± 0.61^a	16.21 ± 0.17^a	15.92 ± 1.28^a
System total
N	73.89 ± 3.54^a	75.30 ± 1.49^a	76.13 ± 0.89^a	74.95 ± 1.13^a
P	62.19 ± 2.68^b	66.68 ± 0.90^a	66.67 ± 1.68^a	67.12 ± 2.66^a
K	59.92 ± 2.19^a	59.56 ± 1.96^a	60.30 ± 0.79^a	59.55 ± 2.11^a

Data are represented as mean ± SE.
Values within the same row with different superscript letters are significantly different (p < 0.05).
N, nitrogen; P, phosphate; K, potassium.