estimated pond water renewal at 2500 m3 per tonne Pangasius fish, which is 1.6 times
higher than our result. This difference may be explained in two
ways. First, the company in our study may apply a lower water
renewal rate than the average surveyed farm by Bosma et al. (2011).
Second, Bosma et al. (2011) did not use actual water renewal data
but an assumption of the water renewal rate, i.e. 0.4 m water column
daily, while our results were calculated using data from the
company’s logbooks