Nitrate Level
Stocking density (individuals.m-2)
30
40
50
60
70
Highest (ppm)
56.3
54.0
63.0
71.0
56.6
Lowest (ppm)
23.5
22.9
30.6
36.6
25.8
Beginning (ppm)
51.7
45.1
46.0
50.0
End (ppm)
27.7
33.9
44.3
46.8
