In these systems, the mechanical aeration of water is indispensable for maintaining adequate concentrations of dissolved oxygen in water.
In addition to the use of nocturnal aeration of water, which is already a consolidated management among farmers, new strategies should be sought to control water quality and obtain better productive results in intensive aquaculture systems.
The mechanical aeration of water started off from the third experimental week until the end of the experiment.
The nocturnal aeration of water is a more efficient management than the afternoon aeration in removing C[O.
Therefore, the afternoon aeration of water could also be efficiently employed to control the concentrations of nitrite in fish tanks.
This indicates that the afternoon aeration of water is a management not indicated for H2S control.
Figure 1 results strengthen the idea that the afternoon aeration of water is a management not appropriate for D[O.
Therefore, the afternoon aeration of water has not affected the tilapia growth performance (Table 4).