Smart hygienic Daphnia detection system

Nazaruddin, Nur Arif Ikhwan (2024) Smart hygienic Daphnia detection system. Project Report. Melaka, Malaysia, Universiti Teknikal Malaysia Melaka. (Submitted)

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Abstract

Daphnia magna is an essential live food stock for aquaculture, providing crucial nutrients to planktivorous fish in freshwater hatcheries, brackish waters, and ornamental fish environments. To optimize Daphnia breeding habitats, the "Smart Hygiene Daphnia Detection System" has been developed, integrating advanced monitoring technology. This system includes a pH monitor for water freshness, a gas detector for hazard identification, a humidity sensor for atmospheric monitoring, and a temperature sensor for maintaining suitable conditions. An ESP32 camera offers visual monitoring and colour-detecting features, which can detect changes in water colour that indicate chlorella green water nutrient recycler and Daphnia blooming process. When such changes are detected, the system promptly informs the breeder via telegram, allowing for timely intervention. Controllable outputs such as a heat lamp, air bubbler, solenoid valve, and water pump ensure precise environmental control. Studies have shown that Daphnia magna are highly sensitive to temperature fluctuations, which can significantly impact water quality. For instance, data collected using DS18B20 and DHT11 sensors indicated a 90% mortality rate when Daphnia were exposed to direct sunlight, highlighting the need for careful temperature management. In an analysis of environmental conditions, it was found that maintaining the water temperature between 20°C and 25°C significantly reduces the mortality rate and promotes optimal growth of Daphnia magna. Additionally, maintaining a pH level between 6.5 and 8.5 were identified as critical parameters for their survival and reproductive success. The "Smart Hygiene Daphnia Detection System" aims to promptly notify breeders of environmental changes, including colour shifts detected by the ESP32 camera, allowing for timely interventions to maintain hygiene and promote effective Daphnia growth. This system has the potential to enhance aquaculture management practices and support the production of nutritious live food stock.

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