The produced biomass of nile tilapia was harvested at the end of the experiment. Meanwhile, to assess the performance of nile tilapia in the system, growth and feed data were collected. Data included the number of fed, lengths and weights of fish measured every week. 50 % of fish were randomly selected to estimate the average weight, the fish production and adjustment of the amount of feed. Fish growth was monitored starting from stocking to the end of the experiment. Specific growth rate (SGR), growth rate (GR) and survival (SR) based on Zonneveld et al. (1991), and feed conversion (FCR) based on Ridha and Cruz (2001), were measured by the following equation: