The aim of this research was to find out the influence and biofertilizer different to increase phytoplankton abudance, and water quality parameters. This research was conducted from September to December 2016 in the Peat Land Kualu Nenas village, Tambang Subdistrict, Kampar Regency, Riau Province. The method used in this study is an experimental method, using a Complete Random Design (CRD) with…