Abstract Phytoplankton is primary producer of natural feed and has an important role in the water. This research was conducted in December 2020 in Tanjung Kudu Lake and Parit Lake. A sampling at three stations, namely Station 1 (inlet), Station 2 (in the middle of the lake), and Station 3 (end of the lake). Sampling was done 3 times one/week. Water quality parameters measure were temperature, …