The study looked at how changing the pH and adding aeration affects the removal of nitrogen and phosphorus from polluted water using aquatic plants. They found that the best pH levels for removing different pollutants varied, with pH 8.9 being best for total nitrogen and pH 6.7 for total phosphorus. Aeration had a significant impact on nitrogen removal, with better results without aeration. However, aeration did not affect phosphorus removal. Overall, the study showed that higher pH levels and aeration can improve the efficiency of removing nitrogen from polluted water using aquatic plants.