This research was conducted from October to November 2019 at the peatland of Kualu Nenas Village, Tambang District, Kampar District, Riau Province. The purpose of this research is to get a comparsion of the mixture between human waste biofertilizer and cow manure biofertilizer to increased the abudance of phytoplankton. The method used in this study was the experimental method of using theā¦