Just read an article from Philippine Network of Environmental Journalists,Inc. about water hyacinth(http://pnej.org/?p=377).
Here the quote which shocked me: “Water hyacinth (scientific name: Eichornia crassipes) is considered the most productive plant on earth as it yields more than 200 tons of dry matter per hectare per year under normal conditions. On water containing high concentrations of sewage, it yields up to 657 tons of dry matter per hectare.”
So sewage treatment is definitely a must!!!
What data do we need to define the right treatment for the sewage in our tank???