Journal of Biology and Nature

Biofloc Technology (BFT) is a sustainable aquaculture system that manages water quality through an in-situ microbial community. The present study aimed to characterize the physicochemical properties of water in six biofloc tanks, compare water quality between control and biofloc systems, and generate baseline information for sustainable biofloc aquaculture in Surguja, Chhattisgarh, India. This study was conducted to assess the physicochemical properties of water collected from six biofloc tanks at pathrai, Surguja, Chhattisgarh, India (22.940902°N, 83.453503°E). One tank (B0) served as a control, with normal water conditions (i.e., NWC). Five tanks (B1–B5) were kept in standard biofloc conditions (i.e., SBC). The District Water Testing Laboratory, Ambikapur, collected and analysed water samples from 16.10.2025. The different parameters analysed were temperature, turbidity, colour, pH, conductivity, total alkalinity, chlorides, nitrates, total hardness, calcium, magnesium, iron fluorides, sulphates, TDS, residual chlorine and bacteriological parameters. According to the results, biofloc (BF) tank had turbidity (41.4 – 70.9 NTU), total alkalinity (126 – 176 mg/L) and nitrate (20 – 30 mg/L) were higher relative to control. The pH remained acceptable (6.93–7.51). Sample B4 had a total hardness of 455.4 mg/L and conductivity of 689 µmhos/cm suggesting geochemical enrichment. The findings identified the physicochemical profiles that are of importance for the biofloc system and the well-being of the fish.