35.0 ppm Nitrate and 20.0 ppm Phosphate. The result also showed that there was no significant difference in body weight and growth rate of the fish fed with Aquagen treated feed and untreated feed. The Use of Aquatic Plants Garden as a Natural Biological Filter. Ecology of the selected areas especially to soil and water parameters was studied. The plants were obtained from farmers and nursed at the center before being planted to the selected sites.
Fertilizer add and pruning the plant monthly.
Monthly samplings were done at three different locations to monitor water quality. Removal of nitrate, phosphate and iron were highest from July to October. Only emerged and floating plants were adaptable and survived at the site. The results indicated that aquatic plants are useful as natural biological filter. In-vitro Culture of the Aquatic Plant with special reference to Cryptocoryne lucens .