Sistem Kontrol Kualitas Air Pada Akuarium Ikan Hias Air Tawar dan Monitoring Via Telegram Berbasis IoT

Design of a water quality control system for freshwater ornamental fish aquariums and monitoring via Telegram has been carried out. The parameters used were turbidity, temperature and pH. The threshold values for water quality are turbidity 25 NTU, temperature 28 O C and water pH 6 to 8. The sensors used in this test are turbidity sensor SEN0198, temperature sensor DS18B20 and pH-4502C sensor. Aquarium water quality control devices in the form of filter pumps, DC fans and pH buffers. Water quality data is processed by the Arduino Uno microcontroller using the Arduino IDE application. The voltage obtained from the sensor is processed by the microcontroller to be sent via the ESP8266 WIFI module and displayed in a Telegram notification. The percentage of error from the SEN0189 turbidity sensor is 4.32%, the DS18B20 temperature sensor is 2.76% and the pH sensor is 1.71%. These results indicate that the three sensors can function properly as a control system and monitor water quality in the aquarium