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Table 4. Averages (from three replicates ± standard errors) of hydrogen ion concentrations expressed as pH found in soil samples collected
before stocking and after harvest at different depths (cm) in each treatment: low density (LD), high density (HD), and high density
with recycling (HDR). Data reported for the HDR treatment represent only the culture pond. The R (treatment column) represents
the oxidation pond only of the HDR treatment. No significant differences were found within treatments or within layers of a treatment.
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