The plants, N. nucifera and C. alternifolius, were well-grown in
the experimental study and had high phosphorus removal efficiency.
The remaining phosphorus in the system during the time of
study is shown in Table 1. After 5 days of the experiment, N. nucifera
and C. alternifolius removed phosphorus to lower than the acceptable
standard guidelines from the U.S. EPA (1991), which is
0.1 mgL1.