Abstract. High shrimp production is followed by a high effluent water discharge containing nutrients such as nitrogen and phosphorus. Artemia shrimps are non-selective filter feeders that can utilize the effluents from aquaculture as food. This study aimed to determine the appropriate stocking density, turbidity, and salinity using the effluent water of whiteleg shrimp (Litopenaeus vannamei) intensive culture as food for Artemia. The experiment included two setups [i.e., small-scale (100 L tank) and large-scale (1 m³ concrete tank)]. Small scale was designed with two subtrials: (1) a two-factorial design, in which turbidity was 20, 25, and 30 cm and stocking densities were 200, 300, 400, and 500 individuals L^-1; (2) Artemia was cultured with 15, 20, 25, and 30 g L^-1 salinities. The best treatment in the first subtrial was expressed in terms of maximal Artemia biomass productivity, which was used to set up the second subtrial. Water quality parameters, such as temperature, pH, dissolved oxygen, and salinity, were recorded daily. Additionally, total ammonia nitrogen (TAN), NO₂-N, total nitrogen, total protein, and total suspended solids (TSS) were measured on days 7 and 14. The survival rate and growth (length) were measured on days 7 and 14, while biomass was collected at the end of the culture. Three microalga phyla were found throughout the experiment, including twelve species. A significant difference was observed (p < 0.05) in the main effects of the parameters on Artemis survival, growth, and biomass. In the first sub-trial, the best parameters were a stocking density of 300 individuals L^-1 and a turbidity of 25 cm. Meanwhile, the best parameters of the second subtrial were 30 g L^-1 salinity, with the highest biomass of 1.5 kg.m^-3.

Key Words: Artemia, algal, growth, shrimp effluent, salinity, survival.