Table 6. NPK total uptake (g/culture unit) in hybrid lemon fin barb, red claw crayfish, and Ocimum basilicum exposed to different night lighting regimen in a polyculture aquaponic system

Nutrient uptake (g/culture unit)	0 h	4 h	8 h	12 h
Fish
N	250.34 ± 10.34^a	253.36 ± 18.98^a	259.09 ± 25.03^a	254.14 ± 13.63^a
P	46.36 ± 0.65^a	50.21 ± 2.76^a	50.82 ± 3.73^a	51.38 ± 4.20^a
K	22.49 ± 0.89^a	22.02 ± 0.67^a	22.64 ± 0.21^a	22.45^s ± 0.90^a
Crayfish
N	23.36 ± 4.27^a	24.44 ± 4.27^a	26.68 ± 3.55^a	26.59 ± 2.30^a
P	1.45 ± 0.36^a	1.47 ± 0.21^a	1.56 ± 0.16^a	1.61 ± 0.07^a
K	0.53 ± 0.11^a	0.55 ± 0.12^a	0.59 ± 0.1^a	0.60 ± 0.11^a
Total (fish and crayfish)
N	273.71 ± 12.06^a	277.8 ± 17.78^a	285.76 ± 22.56^a	280.73 ± 11.73^a
P	47.81 ± 0.80^a	51.68 ± 2.65^a	52.38 ± 3.57^a	52.99 ± 4.13^a
K	23.01 ± 1.45^a	22.57 ± 0.73^a	23.24 ± 0.9^a	23.05 ± 1.15^a
O. basilicum (cycle 1)
N	119.26 ± 4.07^a	122.86 ± 7.15^a	123.76 ± 4.51^a	122.77 ± 1.97^a
P	4.38 ± 0.16^a	4.56 ± 0.18^a	4.60 ± 0.07^a	4.58 ± 0.25^a
K	5.64 ± 0.21^a	5.79 ± 0.31^a	5.81 ± 0.11^a	5.83 ± 0.24^a
O. basilicum (cycle 2)
N	134.36 ± 1.96^a	134.75 ± 7.47^a	135.31 ± 5.54^a	135.07 ± 7.14^a
P	5.20 ± 0.11^a	5.20 ± 0.28^a	5.24 ± 0.21^a	5.31 ± 0.39^a
K	6.22 ± 0.36^a	6.19 ± 0.04^a	6.33 ± 0.12^a	6.34 ± 0.31^a
Total herb (2-cycles)
N	253.63 ± 5.71^a	257.61 ± 12.76^a	259.07 ± 10.05^a	257.84 ± 9.01^a
P	9.57 ± 0.22^a	9.76 ± 0.40^a	9.83 ± 0.28^a	9.89 ± 0.63^a
K	11.86 ± 0.39^a	11.98 ± 0.35^a	12.14 ± 0.08^a	12.18 ± 0.46^a
System total
N	527.33 ± 14.37^a	535.40 ± 21.13^a	544.83 ± 13.40^a	538.57 ± 4.95^a
P	57.39 ± 0.99^a	61.44 ± 2.51^a	62.21 ± 3.30^a	62.88 ± 3.70^a
K	34.87 ± 1.84^a	34.55 ± 1.0^a	35.38 ± 0.91^a	35.23 ± 1.21^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.