3.1. Water quality
Daily changes in the water quality parameters are shown in Table 1.
There were no significant differences in temperature (29.8–23.0 °C) or
pH (7.98–6.48) between the two groups (P N 0.05). DOwasmaintained
at a level greater than 6 mg L−1
, and differed significantly between
the two groups (P b 0.05). This likely resulted from the higher respira-
tion rates caused by the bacteria and other microorganisms in the BFT
group. Similar results were reported in other studies (Emerenciano
et al., 2012; Kim et al., 2014). However, the DO level in the BFT
treatment was well within the acceptable range for the survival and
growth of fish.