and 20,4 mg L in wk 2 and increased 146% and 2012 to 68,7 mg L-1 and 61,4 mg L-1 in wk 4, respectively. FF had no effect on TP throughout the experiment. FF was effective in reducing PO4 until wk 4 when 6 d had lower phosphate concentration than 2 d 1. pp at 24 h d resulted in lower TP than at 12 h d in wk 2 and wk 4 and such lowering 3- effect occurred in wk 3 and wk PO4 4. Petrucio and Esteves(2000) found that a macrophyte E 3- than under 12 h d i PP removes 9.2% more TP and 9,92 more PO4 under 10 h d PP