In these treatments, three biofloc concentrations, expressed as total suspended solids (TSS) were tested: up to 200 mg L−1 (T200), between 400 and 600 mg L−1 (T400–600) and between 800 and 1000 mg L−1 (T800–1000). In another treatment, called T-HET, cultivation began with clear water and the formation of biofloc and control of ammonia were performed by the daily addition of dextrose