Biofloc consists of special substances called probiotics, where probiotics contain beneficial microorganisms in cultivation activities. Probiotics can be given through feed and water (media). Probiotics can break down metabolic waste and stimulate an immune response so that fish health increases and affects growth. Probiotics have an effect on the growth of ti- lapia, but there is no information for freshwater pomfret. This study aims to determine the ef-fect of probiotic types on biofloc volume, water quality, and fish growth in pomfret culture (Colossoma macropomum) biofloc system. The method used was giving different types of probiotics, treatment A control, B EM4, C Probiotic-7, D Aquaenzym. The results of the re-search showed that the lowest pH of the system was 7.85, namely the pH of the probiotic-7 type. The mean floc growth measurement results for treatment A was 12.93, treatment B was 17.54, treatment C was 17.59, treatment D was 15.98. Aquaenzym probiotic has a fish surviv-al rate of 100% compared to other probiotics. The type of probiotic that has the best results in increasing the growth performance of freshwater pomfret (Colossoma macropomum) is probiotic-7.