N level

Week

N mean removal (mg/L)

N content end of 5th week (mg/L)

% removal at the end of the 5th week

Total nitrogen (mg/g) in tissues

5 (mg/L)

1

5.86c

2.14a

57

21.03a

15 (mg/L)

2

3.67b

4.44b

70

21.77a

25 (mg/L)

3

0.5a

5.32c

79

22.27a

4

0.35a

5

0.65a