| assessing water hyacinth (eichhornia crassopes) and lettuce (pistia stratiotes) effectiveness in aquaculture wastewater treatment. | water hyacinth (eichhornia crassipes) and water lettuce (pistia stratiotes) were analyzed to determine their effectiveness in aquaculture wastewater treatment in malaysia. wastewater from fish farm in semanggol perak, malaysia was sampled and the parameters determined included, the ph, turbidity, dissolved oxygen (do), chemical oxygen demand (cod), biochemical oxygen demand (bod), nitrite phosphate (po4(3-)), nitrate (no(3-)), nitrite (no(-2)), ammonia (nh3), and total kjedahl nitrogen (tkn). al ... | 2012 | 22567705 |