With the extension of the culture time, the CK group and the PB group showed a decreasing trend in pH, and both of them had basically the same trend of change, with the pH maintained between 7.3 and 8.1 ( Figure 1A ).
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Effects of <i>Bacillus licheniformis</i> on the water quality, growth performance and bacterial community in <i>Penaeus vannamei</i> aquaculture system.
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