In shrimp culture, managing feed and nutrient inputs are important factors to optimize. It is well known that the amount of nutrients consumed affects an animal’s ability to grow, survive, and the amount of metabolic and excreted waste products entering the system. The aim of the study was to observe the response of L. vannamei to different levels of feed inputs of the commercial shrimp diet (Zeigler Shrimp Grower SI-35, CP 35%) in an intensive biofloc production system. The experiment was conducted in an indoor biofloc recirculating aquaculture system consisting of 24, 800L culture tanks stocked at 150 shrimp/m3 and grown for 42 days. The treatments included eight different feeding rates (64%, 80%, 96%, 112%, 128%, 136%, 144%, and 152% of the standard feeding rate) which were offered via a belt feeder. At the end of the trial, significant differences (P<0.05) in growth and FCR were observed. The shrimps from the treatment fed at 144% of the standard feeding rate had the highest final mean weight (10.4 ± 0.06g), weight gain (9.4 ± 0.10g), and weight gain percentage (927.4%). There is an inflection point above 144% of the standard feeding rate where growth and feed utilization decrease rapidly, causing an increase in FCR and lesser growth increases as maximum gain is approached. The findings of this feeding trial indicate that the current standard feeding protocol could be improved to increase shrimp’s final weight, but it could be at a cost of increased FCR and with the risk of feed wastage (which can cause water quality problems).