The purpose of this research was to get selected treatment of microalgae Chlorella sp. as a reducing polutan of sago liquid waste with the concentration of Agrobost and utilize symbiotic technology between the two. This research used a complete randomized design (CRD) with 5 treatments and 3 replications. In this research was microalgae 800 ml/L (6,78 log Cfu/ml) of sago liquid waste with 5 tre…