Automated Water Quality Detection and Regulation Machine for Ayungin (Leiopotherapon Plumbeus L.)  / Guillermo, Ivan Christopher G.... [et al.].  -  April 2024  - 97 leaves :  28 cm. <br/><br/>Thesis <br/><br/> Ayungin is popular for its tasty flesh making it as one of the most expensive edible inland-caught fishes in the Philippines. In the aquaculture industry, the slow growth of fishes and fish kills in fisheries are the problems encountered by every fish farmer. Just as any fish, Ayungin needs proper water quality optimal for its healthy growth. Water quality is a critical factor and must be monitored when culturing any aquatic organism. In order to solve this problem, the researchers created an automated water quality detection and regulation machine for Ayungin that will assist the local fish farmers for real-time monitoring and regulation of water quality of the Ayungin. The device consists of different water sensors such as pH, dissolved oxygen and temperature. These sensors, together with different actuators such as aerator, water pump and heater helped monitor and correct the abnormalities in the water environment. The study was conducted at BFAR-NIFTC Rizal, Tanay branch in which the testing lasted in a one-week timeframe.  During the one-week testing of the device in BFAR, this research was able to accomplish the questions posed by the study’s objectives. These objectives are; developed and designed an automated water detection and regulation machine equipped with a user’s manual; monitored and evaluated the consistent adherence of the regulated water quality to established standards for the Ayungin Fish species; and lastly the determined level of acceptability of the device in terms of: functional suitability, performance efficiency, reliability, safety, and usability, which are researcher-based parameters on the ISO 25010. The gathered data was evaluated with a weighted mean in the determined performance of the study’s device.  In the data gathered and the developed device, the descriptive and developmental approach was used efficiently to accomplish the objectives of the study. From the study’s objective, the subjects were chosen accordingly. The subjects of the study include the Ayungin fish species itself as the main subject the device was tested to, and the fish farmers and fishermen that evaluated the device’s performance during the tested phase. The method used for the data gathered on the fish farmers and fishermen was a survey questionnaire form.  After having the data gathered via the survey questionnaire form it was determined in the findings that the device performed well in the one-week timeframe it was assigned to. The device accomplished the water detection function as well as the regulation function. In the aspect of water quality detection, it was then compared to other water quality detection equipment regrettably, only pH readings were compared with BFAR-NIFTC's multimeter, as the necessary instruments for dissolved oxygen and temperature were unavailable during testing. Despite this limitation, the observed percentage difference between our device's pH readings and those of the multimeter remained below 2%, falling within an acceptable range. A trial conducted over a one-week period involving measurements of temperature, pH, and dissolved oxygen (DO) levels, alongside surveys administered to experts at BFAR and local fish farmers, demonstrates the effective performance of our water quality detection and regulation device.  After tests and survey questionnaire have been accomplished in BFAR for one week, it was concluded that the device has performed well and is acceptable to be used by the fish farmers who tested and saw how the device worked. The study has accomplished the several of the objectives that was previously mentioned. The design and development of the device was accomplished and it was tested with other equipment pertaining to water quality detection available to BFAR-NIFTC Tanay Branch, and it was found that the device is consistent in its readings as compared to other devices. In terms of the device’s level of acceptability, it has received excellent marking from the survey questionnaire used that contained the parameters from the researcher-based level of acceptance from the ISO 25010.  The researchers propose several key enhancements to the water regulation and monitoring device to optimize its performance in maintaining water quality standards. The study advocate for the adoption of more advanced and higher-cost sensors capable of measuring on a larger scale. This upgrade would enable the device to provide more accurate and comprehensive data, enhancing its capacity for informed decision-making in water quality management. Additionally, the researchers recommend upgrading the actuators to facilitate the dissemination of water improvements over a larger area. By extending the reach of the device's regulatory mechanisms, more widespread and consistent enhancements in water quality can be achieved, contributing to overall ecosystem health. Furthermore, the researchers emphasize the importance of conducting further research into variability in environmental conditions, anthropogenic influences, and operational factors. By gaining deeper insights into these factors, future studies can better understand and address deviations from desired water quality standards, ultimately leading to more effective management strategies. In terms of device design, the researchers suggest incorporating an alarm system to alert users of any component malfunctions promptly. This proactive feature would enable quick identification and resolution of issues, minimizing downtime and ensuring continuous operation of the device. Looking ahead, the researchers propose that future studies prioritize highlighting the safety aspects of the device. By emphasizing safety considerations in both design and operation, stakeholders can ensure user protection and environmental integrity, further reinforcing the device's effectiveness as a valuable tool in water quality management efforts.