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The efficiency of the gas delivery pipes was assessed by analyzing the relationship between the amount of oxygen gas and the time received at different lengths of 5, 10, and 15 centimeters. The R² correlation coefficient was used as a measure of this relationship. The analysis revealed a positive correlation between the amount of oxygen gas and the time received from gas delivery pipes of varying lengths. Furthermore, the amount of oxygen gas had the highest R² value of 0.966 with a gas delivery pipe length of 10 centimeters. As a result, a 10-centimeter gas delivery pipe was selected as the optimal floating oxygen-filling device for selling Giant Freshwater Prawns in the pond. In addition, an automatic notification system was developed and combination with a water quality control device in the pond. When testing the prawn in the farmer's pond and the experimental pond with the automatic notification system installed, the experimental pond has DO value was found to be 8.45 ± 0.27 milligrams per liter, and the difference in surface water temperature and underwater temperature was not significant. The water transparency was measured at 0.58 ± 0.00 meters, and only 453.04 grams of prawn death were recorded. In contrast, the pond owned by the farmer had different water quality measurements with a DO value of 8.63 ± 0.33 milligrams per liter, Additionally, a difference of 2.00 ± 0.00 degrees Celsius was seen between the surface water temperature and underwater temperature, accompanied by a diminished water transparency of 0.36 ± 0.00 meters, indicating an increase in water turbidity. Not only that, the death of prawns in this pond was higher at 684.13 grams compared to the experimental pond. Furthermore, it was noted that notifications were dispatched through LINE, and the functioning of the floating oxygen-filling device was monitored up to twelve times per hour.