The floating wetlands were deployed in Pond 4M on April 8, 2011 with area coverage at about 5%. It was expected that since Pond 4M was a kidney-shaped pond, algae species would probably aggregate at the two ends of the pond. Thus, two pieces of floating mats were deployed at both ends of the pond and the third one was deployed close to the outlet to achieve a better outflow quality (Figure 37). Thousands of seedlings (including Canna and Juncus), flowers, and grass were planted on three integrated floating mats (Figure 37). The information about the N/P content in plant tissue was listed in the Appendix H. The sorption media was added in each seedling container. The floating islands were expected to work as a kidney of nature, providing a beautiful and peaceful habitat for birds and animals.